Official Paper

RRB ALP Instrument Mechanic 23 Jan 2019 Official Paper (Shift 1) (Previous Year Paper)

175 questions · 150 minutes · with answers · free

Attempt as Timed Mock Test

Part A (100 questions)

What is the diameter (in cm) of a sphere of surface area 1386 cm²?

((a))
14
((b))
21
((c))
10.5
((d))
24.5

Show Answer

Answer: ((a))

The bar graph shows the population density of 6 countries in 2000 and 2010.

If the population of country B is 10 million in 2000 and the population of country D is 6 million in 2010, how much more is the area of country B than the area of country D, where population density is measured as the number of people per 100 square kilometers.

((a))
500%
((b))
20%
((c))
400%
((d))
25%

Show Answer

Answer: ((a))

500%

The bar graph shows all the ingredients (in grams) required to make two types of salads, X and Y. If Ingredient B of Salad X is reduced by 100 grams and Ingredient E of salad Y is increased by 25% then salad Y would be lighter than salad X by _______.

((a))
37.50%
((b))
25%
((c))
20%
((d))
22.50%

Show Answer

Answer: ((a))

37.50%

In a steady-flowing river, a boat goes a certain distance upstream at a speed of 12 km/h and comes back the same distance at 24 km/h. Find the average speed for the total journey.

((a))
15 km/h
((b))
16 km/h
((c))
18 km/h
((d))
20 km/h

Show Answer

Answer: ((a))

15 km/h

Find mass of an iron cube of side 2 cm. (Density of iron is 7.8 gm/cm³)

((a))
3.9 gm
((b))
0.975 gm
((c))
15.6 gm
((d))
62.4 gm

Show Answer

Answer: ((a))

3.9 gm

Two cars, X and Y, travel from A to B at average speeds of 50 km/hr and 75 km/hr respectively. If X takes 2 hours more than Y for the journey, then the distance between A and B in km is ______.

((a))
600
((b))
400
((c))
800
((d))
300

Show Answer

Answer: ((a))

600

If a shopkeeper sells an item at Rs. 2,700, he makes 8% profit. If he sells the item at Rs. 3,000 what will be the percentage of profit?

((a))
12
((b))
20
((c))
10
((d))
25

Show Answer

Answer: ((a))

Find the highest common factor of 506 and 782.

((a))
29
((b))
34
((c))
46
((d))
22

Show Answer

Answer: ((a))

A alone can do a task in 35 days and B alone in 14 days. If they work on it together for 5 days, then what fraction of the task is left?

((a))
Quarter
((b))
One-thirds
((c))
Half
((d))
Three fourths

Show Answer

Answer: ((a))

Quarter

(0.1² - 0.025²) ÷ (0.1 - 0.025) = ______.

((a))
0.325
((b))
0.125
((c))
0.625
((d))
0.25

Show Answer

Answer: ((a))

0.325

Find the coordinates of the midpoint of the segment joining the points (-4, 7) and (2, 3).

((a))
(-1, 5)
((b))
(-2, 3)
((c))
(1, -5)
((d))
(2, 4)

Show Answer

Answer: ((a))

(-1, 5)

20 - 2[25% of (15 × 8 ÷ 6 + 12)] = ______

((a))
4
((b))
6
((c))
10
((d))
8

Show Answer

Answer: ((a))

If a - b = 5 and ab = 14, then find a² + b².

((a))
53
((b))
27
((c))
5
((d))
19

Show Answer

Answer: ((a))

Find the value of 5 sin θ - 2 cosec θ, if θ = 30°.

((a))
3/2
((b))
- 3/2
((c))
2/3
((d))
- 2/3

Show Answer

Answer: ((a))

3/2

In a certain gear train, the driver has 18 teeth while the follower has 8 teeth. For every 16 turns of the driver, the follower turns ______ times.

((a))
18
((b))
8
((c))
36
((d))
9

Show Answer

Answer: ((a))

If 5x/2 - 1/4(6x - 5/3) = 7/6, then the value of x is ______.

((a))
5/4
((b))
3/4
((c))
3/7
((d))
5/7

Show Answer

Answer: ((a))

5/4

If the amount received at the end of 1^st and 2^nd year at compound interest on a certain principal is Rs. 1,350 and Rs. 1,458 respectively, what is the rate of interest?

((a))
10%
((b))
15%
((c))
12%
((d))
8%

Show Answer

Answer: ((a))

10%

A trader buys 60 bags of grain at Rs. 400 each. If he sells 18 bags at 8% profit, at what price should he sell the remaining bags to make 16.4% overall profit on selling the 60 bags?

((a))
Rs. 480
((b))
Rs. 500
((c))
Rs. 540
((d))
Rs. 520

Show Answer

Answer: ((a))

Rs. 480

If A, B and C can do a task working alone in 12, 18 and 36 days respectively. They all work together for 2 days, then B quits. How many days A and C working together will take to complete the remainder of the task?

((a))
6
((b))
3
((c))
4
((d))
9

Show Answer

Answer: ((a))

What is the area (in cm²) of an equilateral triangle of side 8 cm?

((a))
32√3
((b))
8√3
((c))
64√3
((d))
16√3

Show Answer

Answer: ((a))

32√3

A and B start to walk from point P towards point Q. The distance between P and Q is 9 km. B starts 4 minutes after A. A, on reaching Q, immediately returns and after walking a kilometre meets B. If A’s speed is a kilometre in 10 minutes, what is B’s speed in kilometres per minute?

((a))
1/15
((b))
1/8
((c))
1/12
((d))
1/6

Show Answer

Answer: ((a))

1/15

Pipe A can fill a tank in 6 hours. Pipe B can empty it in 15 hours. If both the pipes are opened together, then the tank will be filled in how many hours?

((a))
9
((b))
8
((c))
12
((d))
10

Show Answer

Answer: ((a))

When a number is increased by 36, it becomes 109% of itself. What is the number?

((a))
300
((b))
450
((c))
360
((d))
400

Show Answer

Answer: ((a))

300

A bullet travels 90 m in 0.2 seconds. Find its speed in km/hr.

((a))
162
((b))
1,620
((c))
1,250
((d))
125

Show Answer

Answer: ((a))

162

An executive earns a salary of Rs. 12,600 every month, and he spends 5/7 of it. If his salary increases by 1/3^rd and his spending increases by 1/5^th of the present expenditure, what fraction of his salary will he save?

((a))
7/16
((b))
8/15
((c))
7/15
((d))
5/14

Show Answer

Answer: ((a))

7/16

If 3A = 6B = 7C; find A : B : C.

((a))
12 : 7 : 3
((b))
7 : 12 : 6
((c))
14 : 7 : 6
((d))
7 : 3 : 12

Show Answer

Answer: ((a))

12 : 7 : 3

Find x if the mean of the numbers 10, 4, 1, 15, 15, x, 12 and 14 is 10.

((a))
7
((b))
8
((c))
9
((d))
10

Show Answer

Answer: ((a))

If √X + 0.24 = √0.1296 then find X.

((a))
0.0144
((b))
0.12
((c))
1.44
((d))
0.0012

Show Answer

Answer: ((a))

0.0144

The weights of 3 boxes are 4, 7 and 10 kilograms. Which of the following CANNOT be the total weight, in kilograms, of any combination of these boxes?

((a))
14
((b))
21
((c))
17
((d))
18

Show Answer

Answer: ((a))

The author of ‘The Monk Who Sold His Ferrari’ is ______.

((a))
Arvind Adiga
((b))
Robin Sharma
((c))
Manohar Malgonkar
((d))
Arundhati Roy

Show Answer

Answer: ((a))

Arvind Adiga

Find the work done (in kJ) if a force of 750 N pushes a cart of mass 30 kg by 16 m.

((a))
24
((b))
12
((c))
36
((d))
48

Show Answer

Answer: ((a))

Which hazardous substance can cause lung cancer?

((a))
Benzene vapours
((b))
Asbestos particles
((c))
Herbicides
((d))
Aluminum

Show Answer

Answer: ((a))

Benzene vapours

______ is the physiological adjustment by an organism to environmental change.

((a))
Bioremediation
((b))
Bioaccumulation
((c))
Cogeneration
((d))
Acclimation

Show Answer

Answer: ((a))

Bioremediation

Which of the following gases is a highly poisonous, odourless, tasteless and colourless gas?

((a))
Carbon dioxide
((b))
Carbon monoxide
((c))
Methane
((d))
Nitrogen dioxide

Show Answer

Answer: ((a))

Carbon dioxide

Green and yellow vegetables in our diet mostly provide us which element as food?

((a))
Copper
((b))
Sodium
((c))
Zinc
((d))
Potassium

Show Answer

Answer: ((a))

Copper

Binary 110110101 is equal to decimal ________.

((a))
333
((b))
437
((c))
349
((d))
477

Show Answer

Answer: ((a))

333

A/An ______ is software used to maintain the security of a private network.

((a))
malware
((b))
encryption
((c))
firewall
((d))
clickbait

Show Answer

Answer: ((a))

malware

Who was the chairman of the Constitution Drafting Committee?

((a))
Jawaharlal Nehru
((b))
Dr. B R Ambedkar
((c))
Dr. Rajendra Prasad
((d))
Sardar Patel

Show Answer

Answer: ((a))

Jawaharlal Nehru

The Umaid Bhawan Palace is in which city?

((a))
Jaipur
((b))
Jodhpur
((c))
Bikaner
((d))
Udaipur

Show Answer

Answer: ((a))

Jaipur

Classical musician Shivkumar Sharma is associated with which musical instrument?

((a))
Shehnai
((b))
Tabla
((c))
Violin
((d))
Santoor

Show Answer

Answer: ((a))

Shehnai

Which of the following folk dances is from Assam?

((a))
Giddha
((b))
Lezim
((c))
Nati
((d))
Bagurumba

Show Answer

Answer: ((a))

Giddha

-100° Celsius = ______ Fahrenheit

((a))
-373°
((b))
-148°
((c))
173°
((d))
-212°

Show Answer

Answer: ((a))

-373°

If 36 J of work is done in moving a charge Q across 8 V, find Q (in coulombs).

((a))
288
((b))
9
((c))
4.5
((d))
16

Show Answer

Answer: ((a))

288

What is the relative density of a solid of mass 50 gm which when fully immersed in water weighs 10 gm?

((a))
5
((b))
1.25
((c))
2.5
((d))
0.8

Show Answer

Answer: ((a))

If the speed of a car increases from 54 km/hr to 90 km/hr, its kinetic energy increases in the ratio of ________.

((a))
3/5
((b))
9/4
((c))
9/16
((d))
9/25

Show Answer

Answer: ((a))

3/5

Find the length (in cm) of the edge of a cube of a piece of wood which weighs 80 N. (Use g = 10 m/s², density of wood = 1 g/cm³)

((a))
60
((b))
20
((c))
80
((d))
40

Show Answer

Answer: ((a))

Two resistors of R Ω and 60 Ω are connected in parallel to get an effective resistance of 24 Ω. Find R.

((a))
56
((b))
64
((c))
48
((d))
40

Show Answer

Answer: ((a))

Farad per meter is the unit of ______.

((a))
watt per steradian
((b))
permittivity
((c))
permeability
((d))
electric conductance

Show Answer

Answer: ((a))

watt per steradian

A ______ map converts color intensity or grayscale information to heights to give the appearance that features are raised above the surface, like embossed letters.

((a))
shade
((b))
bump
((c))
tone
((d))
tint

Show Answer

Answer: ((a))

shade

A truck of mass 5000 kg accelerates from 25 m/s to 35 m/s. Find the change in its kinetic energy (in MJ).

((a))
1
((b))
2.5
((c))
1.5
((d))
2

Show Answer

Answer: ((a))

Which of the following recipients of the Dadasaheb Phalke Award received it posthumously?

((a))
Vinod Khanna
((b))
Satyajit Ray
((c))
Naushad
((d))
Durga Khote

Show Answer

Answer: ((a))

Vinod Khanna

To ______ is to prepare a storage medium, usually a disk, for reading and writing.

((a))
format
((b))
defrag
((c))
map
((d))
boot

Show Answer

Answer: ((a))

format

Which of the following is the correct relation between resistance ‘R’, conductivity ‘σ’, length ‘L’ and area of cross section ‘A’ of a metal wire?

((a))
RL = Aσ
((b))
RσA = L
((c))
RA = Lσ
((d))
σ = RL/A

Show Answer

Answer: ((a))

RL = Aσ

Which team won the Indian Premier League (IPL) in 2018?

((a))
Sunrisers Hyderabad
((b))
Chennai Super Kings
((c))
Royal Challengers Bangalore
((d))
Kolkata Knight Riders

Show Answer

Answer: ((a))

Sunrisers Hyderabad

Antihistamines are found in some first-aid boxes. When should these drugs be taken?

((a))
To aid in clotting of blood
((b))
To ease the symptoms of hay fever and other allergies
((c))
To ease the indigestion and heartburn
((d))
To bring relief from asthma

Show Answer

Answer: ((a))

To aid in clotting of blood

Acceleration due to gravity on moon is 1/6^th that on earth. How much would an astronaut weigh on the moon if he weighs 90 kgf on earth? (acceleration due to gravity on earth = 10 m/s²)

((a))
15 N
((b))
150 N
((c))
90 N
((d))
9 N

Show Answer

Answer: ((a))

15 N

Which of the following is NOT a base unit?

((a))
mole
((b))
ampere
((c))
radian
((d))
candela

Show Answer

Answer: ((a))

mole

Who invented the blue jeans?

((a))
Levi Strauss
((b))
Todd Oldham
((c))
Calvin Klein
((d))
Gianni Versace

Show Answer

Answer: ((a))

Levi Strauss

Find the potential difference (in V) across a resistance of 2.5 kΩ through which a 2 mA current flows.

((a))
5
((b))
0.2
((c))
1.25
((d))
0.8

Show Answer

Answer: ((a))

The Living Planet Report, released every two years, is the flagship publication of which organisation?

((a))
The Nature Conservancy
((b))
World Wide Fund for Nature
((c))
Conservation International
((d))
Wildlife Conservation Society

Show Answer

Answer: ((a))

The Nature Conservancy

The sum of two binary numbers 1101111 and 1100101 is ______.

((a))
100011100
((b))
100000110
((c))
11110000
((d))
11010100

Show Answer

Answer: ((a))

100011100

The National Skills Development Corporation (NSDC) is a public-private partnership formed under India’s ______.

((a))
Ministry of Finance
((b))
Ministry of Electronics & Information Technology
((c))
Ministry of Corporate Affairs
((d))
Ministry of Science & Technology

Show Answer

Answer: ((a))

Ministry of Finance

The resistance of a metal rod depends on all of the following, except ______.

((a))
resistivity
((b))
density
((c))
length
((d))
temperature

Show Answer

Answer: ((a))

resistivity

Find the missing number in the given series.

-1.3, -0.8, -0.3, ?, 0.7, 1.2

((a))
0.1
((b))
0.3
((c))
0.4
((d))
0.2

Show Answer

Answer: ((a))

0.1

One statement is given, followed by two assumptions, I & II. You have to consider the statement to be true, even if it seems to be at variance from commonly known facts. You are to decide which of the given assumptions can definitely be drawn from the given statement.

Statement: “You are appointed as a trainee accountant on temporary basis. Your employment status will automatically be converted to permanent on submission of pass result of M Com final exam." — Extract from an appointment letter.

Assumptions:

I. M Com final exam is a reasonable proof of an accountant's capability.

II. All trainees are appointed on temporary basis.

((a))
Both I and II are implicit
((b))
Only assumption I is implicit
((c))
Only assumption II is implicit
((d))
Neither I nor II is implicit

Show Answer

Answer: ((a))

Both I and II are implicit

Choose the figure which is different from the rest.

((a))
((b))
((c))
((d))

Show Answer

Answer: ((a))

In a certain code language, ‘+’ represents ‘×’, ‘÷’ represents ‘+’, ‘-’ represents ‘÷’ and ‘×’ represents ‘-’. Find out the answer to the following question.

12 ÷ 6 – 2 + 10 × 5 = ?

((a))
50
((b))
37
((c))
23
((d))
16

Show Answer

Answer: ((a))

In the following figure, the triangle represents actors, the square represents professors, the circle represents Indians and the rectangle represents fathers. Which set of letters represents Indians who are either professors or fathers?

((a))
IGH
((b))
CEF
((c))
E
((d))
G

Show Answer

Answer: ((a))

IGH

Choose the letters which are different from the rest.

((a))
HJL
((b))
PRT
((c))
VTR
((d))
UWY

Show Answer

Answer: ((a))

HJL

Select the option that is related to the third word on the same basis as the second word is related to the first word.

Letter : Envelope ∷ Dagger : ?

((a))
Sheath
((b))
Weapon
((c))
Sword
((d))
Sharp

Show Answer

Answer: ((a))

Sheath

If A $ B means A is the husband of B, A # B means A is the brother of B and A * B means A is the mother of B, then what does P $ Q * R # S mean?

((a))
P is the father of S
((b))
P is the brother-in-law of S
((c))
P is the son of S
((d))
P is the brother of S

Show Answer

Answer: ((a))

P is the father of S

What is the angle between the hour hand and the minute hand at half past two?

((a))
105°
((b))
75°
((c))
120°
((d))
90°

Show Answer

Answer: ((a))

105°

The given Venn diagram shows the number of students who have passed in the three exams, viz. English, Science and Maths. How many students failed in all the three exams?

((a))
3
((b))
12
((c))
9
((d))
6

Show Answer

Answer: ((a))

One statement is given followed by two conclusions. Decide which of the given conclusions can definitely be drawn from the given statement.

Statement: As income increases, cars become more affordable.

Conclusion I: With greater use of technology, cars are now cheaper than they were a generation ago.

Conclusion II: Cars will become so numerous that no future technology will solve the traffic problem.

((a))
Only conclusion I follows
((b))
Both I and II follow
((c))
Neither I nor II follows
((d))
Only conclusion II follows

Show Answer

Answer: ((a))

Only conclusion I follows

A postman starts from the post office and cycles 13 km south, then turns west and cycles 10 km, then turns north and cycles 8 km, then turns east and cycles 2 km and then turns to his left and cycles 5 km. Where is he now with reference to his starting position?

((a))
8 km east
((b))
12 km east
((c))
12 km west
((d))
8 km west

Show Answer

Answer: ((a))

8 km east

Here are some words from an artificial language.

unacri means lighthouse

bancri means lightweight

banetu means overweight

Which word would mean ‘overdrive’?

((a))
adiban
((b))
adietu
((c))
simuna
((d))
criteh

Show Answer

Answer: ((a))

adiban

At present, the ratio between the ages of Anu and Dimpy is 5 : 8. After 2 years, the ratio of their ages will become 2 : 3. What was Dimpy’s age before 2 years?

((a))
10
((b))
12
((c))
16
((d))
14

Show Answer

Answer: ((a))

In the question, two statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if they seem to be at variance with commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:

All flags are banners.

Some flags are emblems.

Conclusion:

I. Some emblems are banners.

II. All banners are emblems.

III.No emblems are banners.

((a))
Only conclusion I follows
((b))
Only conclusion III follows
((c))
All conclusions I, II and III follow
((d))
Only conclusion I and III follow

Show Answer

Answer: ((a))

Only conclusion I follows

Choose the one which is different from the rest.

((a))
Father
((b))
Son
((c))
Mother-in-law
((d))
Brother

Show Answer

Answer: ((a))

Father

Select the option that is related to the third word on the same basis as the second word is related to the first word.

Poem : Stanza ∷ Book : ?

((a))
Language
((b))
Story
((c))
Page
((d))
Printing

Show Answer

Answer: ((a))

Language

If 8 # 12 = 10; 5 # 9 = 7; 6 # 10 = 8, then find the value of 14 # 4.

((a))
10
((b))
9
((c))
5
((d))
3

Show Answer

Answer: ((a))

In a certain code DIRTY is coded as 24759 and FOAM is coded as 1863. Using the same code ARID will be coded as ______.

((a))
2489
((b))
9165
((c))
1579
((d))
6742

Show Answer

Answer: ((a))

2489

In the following question, which set of letters and numbers, when sequentially placed at the gaps in the given series, shall complete it?

1_2x_bb_yy_cc_6zzz

((a))
a345c
((b))
3a45b
((c))
3a4b5
((d))
3a45c

Show Answer

Answer: ((a))

a345c

A said to B, “You are my husband’s daughter-in-law’s son.” How is B related to A?

((a))
B is the father of A
((b))
B is the grandson of A
((c))
B is the brother of A
((d))
B is the son of A

Show Answer

Answer: ((a))

B is the father of A

In the question, two statements are given, followed by two conclusions, I, and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement 1: Some wagons are buggies.

Statement 2: All wagons are carts.

Conclusion I: All buggies are carts.

Conclusion II: Some carts are buggies.

((a))
Only conclusion I follows
((b))
Both I and II follow
((c))
Neither I nor II follows
((d))
Only conclusion II follows

Show Answer

Answer: ((a))

Only conclusion I follows

Rearrange the parts of the sentence in the correct order.

A customer based on reasons

X- chances are that they actually made the change

Y- may not come out of the changing room, but

Z- which is unfortunately inappropriate

((a))
YXZ
((b))
ZYX
((c))
XZY
((d))
ZXY

Show Answer

Answer: ((a))

YXZ

Find the power (in W) of a pump if it can lift 1 tonne of water by 90 m in 30 minutes. (Assume 100% efficiency and use g= 10 m/s²)

((a))
50
((b))
250
((c))
25
((d))
500

Show Answer

Answer: ((a))

Which of the following is an example of a first class lever?

((a))
Ice tongs
((b))
Wheel barrow
((c))
A pair of scissors
((d))
Nut cracker

Show Answer

Answer: ((a))

Ice tongs

_______ curves employ at least three points to define a curve. The two endpoints of the curve are called anchor points. The other points, which define the shape of the curve, are called handles, tangent points, or nodes.

((a))
Bicorn
((b))
Bezier
((c))
Deltoid
((d))
Kappa

Show Answer

Answer: ((a))

Bicorn

Find the efficiency of a pulley system which has a mechanical advantage of 2.5 and where the load lifts by 2.5 meters on pulling the rope by 10 m.

((a))
62.50%
((b))
25.00%
((c))
40.00%
((d))
100.00%

Show Answer

Answer: ((a))

62.50%

________ is when we cover a surface with a pattern of flat shapes so that there are no overlaps or gaps.

((a))
Tessellation
((b))
Tracking
((c))
Gradient
((d))
Kerning

Show Answer

Answer: ((a))

Tessellation

If half a litre of hot water at 90°C is mixed with three and a half litres of cold water at 10° C, find the final equilibrium temperature (in °C) if no heat is lost.

((a))
20
((b))
40
((c))
30
((d))
50

Show Answer

Answer: ((a))

Two children, weighing 30 kg and 15 kg, sit on one side of a see-saw at a distance of 1 m and 1.2 m respectively, from the fulcrum. A boy of 'M' kg sits on the other side of the see-saw at a distance of 1.2 m from the fulcrum, and the see- saw is in equilibrium. Find M.

((a))
36
((b))
45
((c))
48
((d))
40

Show Answer

Answer: ((a))

Find the heat capacity of a pan of mass 200 g, if its temperature rises by 8° C on receiving 2000 J of heat.

((a))
250 JK^-1
((b))
5 JK^-1
((c))
50 Jkg^-1K^-1
((d))
1.25 Jkg^-1K^-1

Show Answer

Answer: ((a))

250 JK^-1

210 mm × 297 mm are the dimensions of ______ size paper.

((a))
A4
((b))
A2
((c))
A3
((d))
A1

Show Answer

Answer: ((a))

The sentences given in the question, which, when properly sequenced, form a coherent paragraph. Each sentence is labelled with a letter. Choose the most logical order of sentences from among the given choices to construct a coherent paragraph.

Outside their window there was a vine with attractive foliage, but it started shedding leaves one by one as summer passed through fall into winter.

A - Came dawn, when Johnsy looked out of the window from her sick bed, lo and behold, the leaf was still there and it continued to be there on the following days.

B - Finally, only one last leaf remained. Johnsy told Sue that when that leaf fell, her life would also go.

C - The girl regained her will to live and was fully recovered in a few days.

D - A concerned elderly artist friend of the girls, hearing this story, climbed outside the window in the bitterly cold night and painted a life-like leaf at the spot from where the last leaf had just fallen.

((a))
BDCA
((b))
BDAC
((c))
DBCA
((d))
DBAC

Show Answer

Answer: ((a))

BDCA

An object with greater ______ has greater inertia.

((a))
velocity
((b))
acceleration
((c))
volume
((d))
mass

Show Answer

Answer: ((a))

velocity

Find the specific heat capacity (in Jg^-1K^-1) of a block of metal of mass 500 g, the temperature of which rises by 80°C when it absorbs 10 kJ of heat?

((a))
0.4
((b))
0.16
((c))
1.56
((d))
0.25

Show Answer

Answer: ((a))

0.4

Find the specific latent heat of vaporisation of 1.25 g of nitrogen (in Jg^-1), if it releases 250 Joules of heat when it condenses at its boiling point of 196° C.

((a))
469
((b))
500
((c))
312.5
((d))
200

Show Answer

Answer: ((a))

469

100

An arrowhead at the end of a dimension line is approximately _________ long and 1 mm wide.

((a))
3 mm
((b))
5 mm
((c))
1 mm
((d))
1.5 mm

Show Answer

Answer: ((a))

3 mm

Part B (75 questions)

101

For resistance measurement, a meter contains __________.

((a))
low voltage source
((b))
high source
((c))
medium current source
((d))
low current source

Show Answer

Answer: ((a))

low voltage source

102

Armature winding is mounted on a __________. (DC Motor)

((a))
platform
((b))
wooden base
((c))
stator
((d))
rotor

Show Answer

Answer: ((a))

platform

103

Vacuum thermos-elements types of instruments are mostly employed for the measurement of electric current at ________.

((a))
medium frequency
((b))
normal frequency
((c))
very high frequency
((d))
very low frequency

Show Answer

Answer: ((a))

medium frequency

104

If one wants to divert from main line to a two-direction use, then which of these has to be used?

((a))
Bend
((b))
Union
((c))
Elbow
((d))
T

Show Answer

Answer: ((a))

Bend

105

The fundamental unit which is common in FPS and MKS systems is _________.

((a))
Foot
((b))
Pound
((c))
Kilogram
((d))
Second

Show Answer

Answer: ((a))

Foot

106

What will be the effect if a refrigeration cycle contains moisture?

((a))
Capillary may choke
((b))
Compressor will switch off
((c))
Fan will switch off
((d))
Thermostat will switch off

Show Answer

Answer: ((a))

Capillary may choke

107

What is the difference of DC voltages in adjoining brushes?

((a))
10 V
((b))
15 V
((c))
0 V
((d))
12 V

Show Answer

Answer: ((a))

10 V

108

Bourdon tube can be used for measurements of pressure up to _________.

((a))
10 MN/m2
((b))
5 MN/m2
((c))
3 MN/m2
((d))
8 MN/m2

Show Answer

Answer: ((a))

10 MN/m2

109

What does a Multimeter measure?

((a))
Pressure
((b))
Current
((c))
Temperature
((d))
Force

Show Answer

Answer: ((a))

Pressure

110

Which method is employed to connect batteries?

((a))
parallel
((b))
Direct
((c))
Series
((d))
reverse

Show Answer

Answer: ((a))

parallel

111

What is the full form of SVGA?

((a))
Standard Visual Graphics Array
((b))
Stereo Video Graphy Array
((c))
Super Video Graphics Array
((d))
Standard Video Graphics Amplifier

Show Answer

Answer: ((a))

Standard Visual Graphics Array

112

What is the atmospheric pressure at sea level?

((a))
23 psi
((b))
18.75 psi
((c))
14.70 psi
((d))
21.70 psi

Show Answer

Answer: ((a))

23 psi

113

How many strain gauges are required for measuring deformation?

((a))
Four
((b))
Two
((c))
Three
((d))
One

Show Answer

Answer: ((a))

Four

114

The receiver tank will help remove water from the system by giving ________.

((a))
the air a chance to become cool
((b))
the air a chance to become moisture
((c))
the air a chance to convert into vapour
((d))
the air a chance to become hot

Show Answer

Answer: ((a))

the air a chance to become cool

115

Supply voltage in an energy meter ___________.

((a))
is always zero
((b))
is always constant
((c))
depends on the load
((d))
can fluctuate

Show Answer

Answer: ((a))

is always zero

116

Generator transformers are ________ transformers.

((a))
Step-up
((b))
Step-down
((c))
One-one
((d))
Auto

Show Answer

Answer: ((a))

Step-up

117

The device used to measure potential difference between two points in volts is known as ____________.

((a))
Voltmeter
((b))
Ammeter
((c))
Ohmmeter
((d))
Energy metre

Show Answer

Answer: ((a))

Voltmeter

118

Which of the following cutting conditions greatly affects the tool wear?

((a))
Frequency of use
((b))
Depth of cut
((c))
Feed
((d))
Cutting speed

Show Answer

Answer: ((a))

Frequency of use

119

Digital voltmeters can be used to measure ___________.

((a))
voltage and pressure
((b))
force
((c))
current
((d))
resistance

Show Answer

Answer: ((a))

voltage and pressure

120

Where is a field magnet coil fitted in DC generator?

((a))
In the rotor
((b))
On the shaft
((c))
On the back cover
((d))
In the body

Show Answer

Answer: ((a))

In the rotor

121

Which of the following material is used for negative pole of a dry cell?

((a))
silicon
((b))
Aluminium
((c))
Zinc
((d))
Lead

Show Answer

Answer: ((a))

silicon

122

A dynamometer type wattmeter consists of _____________.

((a))
no coils
((b))
electric coil
((c))
potential and current coils
((d))
moving coil

Show Answer

Answer: ((a))

no coils

123

Ratchet of outside micrometre is used to _________.

((a))
indicate the correct measurement achieved
((b))
lock the frame
((c))
lock the hub
((d))
lock the spindle

Show Answer

Answer: ((a))

indicate the correct measurement achieved

124

Which hand tool is used to remove spots for obtaining high degree of accuracy?

((a))
File
((b))
Scraper
((c))
Chisel
((d))
Hacksaw

Show Answer

Answer: ((a))

File

125

Energy source is NOT available in the _________.

((a))
battery
((b))
generator
((c))
rheostat
((d))
multimeter

Show Answer

Answer: ((a))

battery

126

A Zener diode is used as ___________.

((a))
an amplifier
((b))
a multi-vibrator
((c))
a rectifier
((d))
a voltage regulator

Show Answer

Answer: ((a))

an amplifier

127

Crystal oscillators are best suitable for the use in __________.

((a))
timing elements
((b))
movement elements
((c))
speed elements
((d))
temperature elements

Show Answer

Answer: ((a))

timing elements

128

How can the air quality condition of a place be improved?

((a))
By adding air
((b))
By using a de-humidifier
((c))
By filtration of air
((d))
By adding moisture to the air

Show Answer

Answer: ((a))

By adding air

129

Which of the following is not a type of pressure sensing element?

((a))
Orifice plate
((b))
Bourdon tube
((c))
Diaphragm
((d))
Bellows

Show Answer

Answer: ((a))

Orifice plate

130

The SI unit of inductance is __________.

((a))
henry
((b))
volt
((c))
amperes
((d))
Ohms

Show Answer

Answer: ((a))

henry

131

A shaft coupling is a device used to ___________.

((a))
connect two shafts together
((b))
change direction of the shaft
((c))
change the direction of rotation
((d))
connect three shafts together

Show Answer

Answer: ((a))

connect two shafts together

132

The Output of NAND Gate is low in case

((a))
any one of the inputs is LOW
((b))
any one of the inputs is HIGH
((c))
all of the inputs are HIGH
((d))
all of the inputs are LOW

Show Answer

Answer: ((a))

any one of the inputs is LOW

133

If a CRO maximum input is 10 V, then which of these probes can be used to measure 60 V?

((a))
30 x
((b))
1000 x
((c))
1 x
((d))
10 x

Show Answer

Answer: ((a))

30 x

134

In a PNP transistor, the base is of ___________ material.

((a))
N
((b))
Y
((c))
X
((d))
P

Show Answer

Answer: ((a))

135

Dynamometer type wattmeter responds to the __________.

((a))
average value of the active power
((b))
average value of the reactive power
((c))
peak value of the active power
((d))
peak value of the reactive power

Show Answer

Answer: ((a))

average value of the active power

136

Cast iron water pipe joint is fitted with the help of __________.

((a))
brazing
((b))
a socket
((c))
flange coupling
((d))
welding

Show Answer

Answer: ((a))

brazing

137

What is used as a Circuit breaker?

((a))
fuse
((b))
resistor
((c))
switch
((d))
resettable protective device

Show Answer

Answer: ((a))

fuse

138

Which of the following is the unit of length?

((a))
Light year
((b))
Candela
((c))
Lunar month
((d))
Kelvin

Show Answer

Answer: ((a))

Light year

139

Swaging of copper tube is done for joining __________.

((a))
the stud
((b))
the flaring nut
((c))
a dissimilar diameter tube
((d))
a tube of the same diameter as the copper tube

Show Answer

Answer: ((a))

the stud

140

_________ is the standard line of measurement tool.

((a))
Slip gauges
((b))
Micrometre
((c))
Measuring tape
((d))
End bars

Show Answer

Answer: ((a))

Slip gauges

141

Hard copper tube can be flared by ___________.

((a))
using hard flaring tool
((b))
annealing copper tube
((c))
applying special chemicals
((d))
red hot position of the tube

Show Answer

Answer: ((a))

using hard flaring tool

142

Why is straightening of copper tube needed?

((a))
To increase the fluid pressure
((b))
To avoid corrosion
((c))
To decrease the fluid pressure
((d))
To make the outer look good

Show Answer

Answer: ((a))

To increase the fluid pressure

143

Equalizer ring is required in case of armature having which of the following winding?

((a))
Lap
((b))
Delta
((c))
Wave
((d))
Duplex

Show Answer

Answer: ((a))

Lap

144

Law of conservation of Energy is the basis for _______ law.

((a))
Ohms
((b))
Faradays
((c))
Kirchhoff
((d))
Fleming

Show Answer

Answer: ((a))

Ohms

145

What is the meaning of m8 × 1.25?

((a))
Modern thread with 1.25 mm pitch
((b))
Master thread with 1.25 mm pitch
((c))
Malaysia thread with 1.25 mm pitch
((d))
Metric thread with 1.25 mm pitch

Show Answer

Answer: ((a))

Modern thread with 1.25 mm pitch

146

Root of the thread is _________.

((a))
the smallest diameter of a screw thread
((b))
the largest diameter of a screw thread
((c))
the bottom of the thread groove
((d))
between crest and the root of the thread

Show Answer

Answer: ((a))

the smallest diameter of a screw thread

147

If input frequency is 50 Hz, then the ripple frequency of half wave rectifier will be equal to _________.

((a))
25 Hz
((b))
50 Hz
((c))
100 Hz
((d))
500 Hz

Show Answer

Answer: ((a))

25 Hz

148

The cycle required to fetch and execute an instruction in an 8085 microprocessor is known as a __________.

((a))
Machine cycle
((b))
Memory cycle
((c))
Instruction cycle
((d))
Clock cycle

Show Answer

Answer: ((a))

Machine cycle

149

Dry cell E.M.F Value is approximately _______.

((a))
2.5 V
((b))
2.0 V
((c))
0.5 V
((d))
1.5 V

Show Answer

Answer: ((a))

2.5 V

150

How many control springs are provided in Power Factor Meter?

((a))
Four
((b))
One
((c))
Two
((d))
Zero

Show Answer

Answer: ((a))

Four

151

For comfort air zone, what should be the RH range?

((a))
20% - 30%
((b))
10% - 20%
((c))
50% - 60%
((d))
30% - 40%

Show Answer

Answer: ((a))

20% - 30%

152

Which device acts like an NPN and a PNP transistor connected base-to-base and emitter-to-collector?

((a))
TRIAC
((b))
DIAC
((c))
SCR
((d))
UJT

Show Answer

Answer: ((a))

TRIAC

153

Megger is an instrument used for the measurement of _________.

((a))
Low resistance
((b))
Leakage current
((c))
Medium resistance
((d))
High resistance

Show Answer

Answer: ((a))

Low resistance

154

A socket is used to __________.

((a))
join two similar pipes
((b))
divert direction of pipe
((c))
keep the pipe in same direction
((d))
join two dissimilar pipes

Show Answer

Answer: ((a))

join two similar pipes

155

In a balanced 3 phase circuit, neutral current is always ___________.

((a))
12 A
((b))
10 A
((c))
15 A
((d))
0 A

Show Answer

Answer: ((a))

12 A

156

Stable Oscillator Output has constant _________.

((a))
Voltage & resistance
((b))
Amplitude and frequency
((c))
Temperature & movement
((d))
Current

Show Answer

Answer: ((a))

Voltage & resistance

157

Resistivity of the wire depends on mainly ___________

((a))
number of wires
((b))
Material
((c))
Diameter of the wire
((d))
Length of the wire

Show Answer

Answer: ((a))

number of wires

158

What instrument is used for visually indicating the pressure level?

((a))
Manometer
((b))
Diaphragm sensor
((c))
Bourdon tube
((d))
Resonant wire device

Show Answer

Answer: ((a))

Manometer

159

An amplifier which has zero input signal is called __________.

((a))
fluctuating signal condition
((b))
zero signal condition
((c))
maximum signal condition
((d))
minimum signal condition

Show Answer

Answer: ((a))

fluctuating signal condition

160

By what name is Voltage magnification of electromagnetism known?

((a))
Use factor
((b))
Voltage factor
((c))
Current factor
((d))
Quality factor

Show Answer

Answer: ((a))

Use factor

161

What is the unit for electric charge?

((a))
watts - hr
((b))
Ampere - hour
((c))
Voltage
((d))
Ohms - hr

Show Answer

Answer: ((a))

watts - hr

162

A crystal diode has __________.

((a))
two p-n junctions
((b))
three p-n junctions
((c))
four p-n junctions
((d))
one p-n junction

Show Answer

Answer: ((a))

two p-n junctions

163

If Power = 100 watt and Resistance = 4 ohms, then Current (I) = ___________?

((a))
10 A
((b))
100 A
((c))
2 A
((d))
5 A

Show Answer

Answer: ((a))

10 A

164

The AC power of output signal is obtained by ___________ of amplifier.

((a))
AC biasing voltage
((b))
DC biasing voltage
((c))
input AC voltage
((d))
Input DC voltage

Show Answer

Answer: ((a))

AC biasing voltage

165

Transformer utilization factor of a half wave rectifier is equal to __________.

((a))
0.267
((b))
0.287
((c))
0.297
((d))
0.256

Show Answer

Answer: ((a))

0.267

166

What is the recommended temperature range of copper tube?

((a))
-29°C to 425°C
((b))
-40°C to 205°C
((c))
-80°C to 335°C
((d))
-225°C to 550°C

Show Answer

Answer: ((a))

-29°C to 425°C

167

How many types of Phase Sequence Indicators are there?

((a))
1
((b))
2
((c))
5
((d))
10

Show Answer

Answer: ((a))

168

What happens if a kink develops during pipe bending?

((a))
Finishing gets effected
((b))
Joining problem occurs
((c))
Pressure drop of fluid is more
((d))
Pressure drop of fluid is less

Show Answer

Answer: ((a))

Finishing gets effected

169

How is the moisture content of 'condition space' improved?

((a))
By removing dry air
((b))
By isolating unit
((c))
By adding dry air
((d))
By adding moisture

Show Answer

Answer: ((a))

By removing dry air

170

Which type of pencil drier adsorbs moisture?

((a))
Silica gel containing drier
((b))
Metal net containing drier
((c))
Molecular sieve containing drier
((d))
Alumina containing drier

Show Answer

Answer: ((a))

Silica gel containing drier

171

Tunnel diode has a very fast operation in the ________ frequency region.

((a))
Wi-Fi
((b))
microwave
((c))
ultraviolet
((d))
gamma

Show Answer

Answer: ((a))

Wi-Fi

172

Calculate the work done in a resistor of 10 ohm carrying 3 A of current in 3 hours.

((a))
27 kWh
((b))
0.027 J
((c))
270 kJ
((d))
0.27 kWh

Show Answer

Answer: ((a))

27 kWh

173

What is the probe required for Power Quality Analyser for three phase supply?

((a))
1 Current, 2 Voltage
((b))
3 Current, 3 Voltage
((c))
2 Current, 2 Voltage
((d))
2 Current, 1 voltage

Show Answer

Answer: ((a))

1 Current, 2 Voltage

174

450V bulb passes a current of 0.4A. Calculate the power in the lamp.

((a))
180 W
((b))
900 W
((c))
425 W
((d))
1125 W

Show Answer

Answer: ((a))

180 W

175

What cannot be measured using a CRO device?

((a))
voltage ripple
((b))
resistance
((c))
current
((d))
voltage

Show Answer

Answer: ((a))

voltage ripple

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