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Name the scientist who discovered bacteria ?
Robert Koch
James Chadwick
Eugen Goldstein
A V Leeuwenhoek
Correct answer
Robert Koch
If a body has a specific gravity of less than 1, then it will float in/on ___________.
air
water
liquids
mercury
Correct answer
air
Which of the following options does not have an SI base unit?
Amount of substance
Frequency
Luminous intensity
Electric current
Correct answer
Amount of substance
How many medals did India win in Rio Olympics, 2016?
3
4
2
5
Correct answer
3
It is mainly due to the gravitational effect of the __________ on the rotating earth that the level of water in the sea rises and falls.
Venus
Mercury
Moon
Sun
Correct answer
Venus
Two resistance of 2Ω and 6Ω are connected in series and this combination is connected across a 12 V battery. Find the current in the 6Ω resistor.
3.5 A
0.5 A
2.5 A
Correct answer
3.5 A
Substances that are broken down by biological processes are said to be _________.
reusable
non-biodegradabl
non-reusable
biodegradable
Correct answer
reusable
A software program that has been developed to harm other computers is called a/an _________.
server
LAN
malware
operating system
Correct answer
server
Kuchipudi has its roots in which Indian State?
Arunachal Pradesh
Kerala
Andhra Pradesh
Himachal Pradesh
Correct answer
Arunachal Pradesh
Which Indian cricketer received the Padma Bhushan in 2018?
MS Dhoni
Virat Kohli
Sachin Tendulkar
Saurav Ganguly
Correct answer
MS Dhoni
JPEG stands for __________.
Joint Program Experts Group
Joint Program Executing Group
Joint Photographic Experts Group
Joint Program Experimental Group.
Correct answer
Joint Program Experts Group
Two resistors, one of 12 Ω and the other of 24 Ω are connected in parallel. This combination is connected in series with a 22 Ω resistor and a 12 V battery. The current in the 12 Ω resistor is __________.
(8/15) A
(2/15) A
(6/15) A
(4/15) A
Correct answer
(8/15) A
RK Narayan is famous for his book ___________.
The Room on the Roof
Two Livers
Malgudi Days
A suitable Boy
Correct answer
The Room on the Roof
_________ protection must be worn whenever noise levels exceed the noise exposure standard.
Hearing
Head
Eye
Foot
Correct answer
Hearing
A wire of length 1 and radius r has a resistance R. The resistance of another wire made of the same material but having half its length and half its radius will be.
4R
R/2
2R
R
Correct answer
4R
Safety boots or shoes must be worn in designated areas to protect your _______ from falling objects.
eye
ear
head
feet
Correct answer
eye
A cylindrical wire of length L and radius r has a resistance of R. The resistance of another wire of the same material but thrice its length and one-third its radius will be __________.
27R
9R
R
3R
Correct answer
27R
If a body is NOT homogeneous, then its density is a function of its ___________.
pressure
acceleration
position
velocity
Correct answer
pressure
Two resistors of 10Ω and 20 Ω area connected in series and this combination is connected across a 30 V supply voltage. Find the voltage across the 10 Ω resistor.
20 V
10 V
5 V
15 V
Correct answer
20 V
Which one of these is a harvest festival?
Teej
Janmashtami
Deepawali
Onam
Correct answer
Teej
86°F is equal to __________
20°C
30°C
34°C
10°C
Correct answer
20°C
Where is the Headquarters of UNESCO located?
New York City
Geneva
Paris
Washington DC
Correct answer
New York City
Name of the painter of famous painting, ‘Mahishasura’.
MF Hussain
Amrita Sher-Gil
Raja Ravi Verma
Tyeb Mehta
Correct answer
MF Hussain
What is the work that needs to be done to increase the speed of a 1 kg ball from 2 m/s to 4 m/s?
8 J
10 J
6 J
12 J
Correct answer
8 J
The Ajanta Caves in Maharashtra feature paintings and sculptures that depict __________ tales.
Arabic
Islamic
Buddhist
Maratha
Correct answer
Arabic
The volume of a given amount of water ________ between 0°C to 4°C.
is zero
decreases
remains constant
increases
Correct answer
is zero
Two resistance of 2Ω and 6Ω are connected in series and this combination is connected across a 12 V bettery. Find the power supplied by the battery.
10 W
18 W
16 W
14 W
Correct answer
10 W
An object weighs X units on the earth. If we take the same object to the moon, its weight there will be ________.
zero
less than X
equal to X
more than X
Correct answer
zero
A body starts from rest. Its displacement is proportional to _________ when its acceleration is constant.
time squared
velocity
work
time
Correct answer
time squared
A source of voltage V maintains a current i in a circuit. The energy supplied to the circuit by the source in time t is __________.
Vit
1/Vit
Vi/t
V/it
Correct answer
Vit
Who was the first governor of the Reserve Bank of India?
Sir James Braid Taylor
KR Puri
HVR Iyengar
Sir Osborne A Smith
Correct answer
Sir James Braid Taylor
A car covers 400 m in 20 seconds. Find the average speed (in km/hr) of the car.
72
124
108
36
Correct answer
72
If sin θ = 15/17, then cot θ = ?
\(\frac{8}{{15}}\)
\(\frac{8}{{17}}\)
\(\frac{{15}}{8}\)
\(\frac{{17}}{{15}}\)
Correct answer
\(\frac{8}{{15}}\)
In an examination, the highest score and the lowest score are different by 55 and the higher one was 9/4 times the lower one. Find the lowest score.
40
36
44
48
Correct answer
40
A number is as much greater than 50 as it is lesser than 84. What is the number?
65
66
68
67
Correct answer
65
If \(x = \sqrt {125} \times \sqrt {30} \times \sqrt 6 \) , then x is equal to:
175
125
136
150
Correct answer
175
A got Rs. 80 as his share of profit where the total profit was Rs. 240 and the ratio of profit distribution between A and B was x : 2. What is the value of x?
1
4
2
5
Correct answer
1
What is the median of 8, 5, 7, 9, 11, 6, 10?
9
8
10
7
Correct answer
9
If 5050 × 0.5x = 25250, then 2505 ÷ x2 = ?
0.2505
25.05
2.505
250.5
Correct answer
0.2505
An article of marked price Rs. 12000 was sold. Had a discount of 15% been offered, a profit of 2% would have been made. What was the cost price?
Rs. 10,200
Rs. 10,000
Rs. 11,000
Rs. 10,800
Correct answer
Rs. 10,200
A sum of Rs. 2,000 was spent in buying a pair of trousers. The sum spent was 2/5th of the total money Shashi had with her. How much was the total money she had?
Rs. 4,000
Rs. 4, 250
Rs. 4, 750
Rs. 5,000
Correct answer
Rs. 4,000
A machine was bought for Rs. 1,500 and a repairing charge of Rs. 100 was paid afterwards. At what price should it be sold to gain a profit of 25%?
Rs. 2,040
Rs. 1,960
Rs. 2,000
Rs. 1, 920
Correct answer
Rs. 2,040
In angular measurement, one radian is equivalent to ________ degree (approximately).
65.27
57.27
90
180
Correct answer
65.27
A and B can do a work in 15 days. B and C can do the work in 20 days and A and C can do the work in 10 days. In how many days will they together completed the work?
10.67 days
10.91 days
10.71 days
9.23 days
Correct answer
10.67 days
Pipes A and B can fill a tank in 12 minutes and 16 minutes respectively. Both A and B are opened for 4 minutes and then A is closed. How much extra time will B take to fill the tank completely?
\(\frac{{20}}{3}\) minutes
7 minutes
\(\frac{{21}}{4}\) minutes
6 minutes
Correct answer
\(\frac{{20}}{3}\) minutes
A can do 2/5 of a work in 10 days. B can do ½ of the some work in 10 days. They worked together for 5 days and then A left. In how many days will B finish the remaining work?
8
10
11
9
Correct answer
8
Reflection of point (-2, -6) on the Y-axis is:
(2, 6)
(-6, -2)
(-2, 6)
(2, -6)
Correct answer
(2, 6)
The pie chart shows the breakup in percentage of the various expenses of a Company. Study the diagram and answer the following question.
What is the interest expense if total expenses is Rs. 25000.
Rs. 2, 500
Rs. 1, 800
Rs. 9, 000
Rs. 5, 000
Correct answer
Rs. 2, 500
A motorcycle travelled 1000 m at 36 km/hr. Find the time (in seconds) taken by the motorcycle to cover this distance.
300
100
400
200
Correct answer
300
A 4-digit number 1xy7 is divisible by 11. What is the value of x - y?
-8
-2
-4
-6
Correct answer
-8
Tap M and N can together fill a cistern in 48/13 minutes. N alone can fill it in 6 minutes. How much time will M alone take to fill the cistern?
9.6 minutes
9 minutes
9.4 minutes
8.6 minutes
Correct answer
9.6 minutes
What is the curved surface area of a hemisphere whose radius is 7 cm? (take π = 22/7)
616 cm2
154 cm2
308 cm2
924 cm2
Correct answer
616 cm2
An airplane flies at the speed of 50 m/s. How much distance (in km) will it cover in a flight of 5 hours?
895
850
880
900
Correct answer
895
What is the distance between the points (4, 3) and (3, -2)?
\(\sqrt {26} \)
\(\sqrt {24} \)
6
5
Correct answer
\(\sqrt {26} \)
sec 45° - tan 60° = ?
\( - \sqrt 3 + \sqrt 2 \)
\( - \sqrt 3 - \sqrt 2 \)
\(\frac{{\sqrt 3 }}{2}\)
\(\sqrt 3 + \sqrt 2 \)
Correct answer
\( - \sqrt 3 + \sqrt 2 \)
What is the least number which when doubled is perfectly divisible by 7, 12 and 15?
420
210
214
220
Correct answer
420
A sum of Rs. 10,000 amounts to Rs. 11, 449 in 2 years, when the interest is compounded annually. The interest rate percent per annum is:
6%
1%
7%
8%
Correct answer
6%
The ages of X and Y are in the ratio 4 : 7. Three years earlier, the ratio of their ages was 1 : 2. What is the difference between their current ages (Y - X)?
3
6
9
7.5
Correct answer
3
What is 80% of 50% of 90?
30
34
32
36
Correct answer
30
Choose the figure that is different from the rest.
Correct answer
A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
1.14, 1.28, 1.42, ?, 1.70, 1.84
1.56
1.54
1.68
1.62
Correct answer
1.56
Two planes E and F start flying from the same point. E flies 7 km west, then turns to its left and flies 15 km. Meanwhile F flies 11 km east and turns right and flies 15 km. Where is F with respect to E?
F is 18 km west of E
F is 4 km east of E
F is 18 km east of E
F is 4 km west of E
Correct answer
F is 18 km west of E
Given below are some letters, that each of these letters has a corresponding number. Select the combination of numbers from the option so that the jumbled letters arranged accordingly will form a meaningful English word.
H T R U O A
1 2 3 4 5 6
6, 4, 2, 1, 5, 3
3, 4, 5, 2, 1, 6
1, 6, 2, 4, 5, 3
2, 1, 5, 3, 4, 6
Correct answer
6, 4, 2, 1, 5, 3
I, J, K and L are sitting in a row. L and I are sitting next to each other and I and K are the ends. Who is sitting next to J?
Only K
L and I
K and L
Only L
Correct answer
Only K
Select the option that is related to the third term in the same way as the second term is related to the first term.
Tall : Short ∷ Glad : ?
Sad
Happy
Emotion
Smile
Correct answer
Sad
If, ‘+’ represents ‘×’, ‘-‘ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘-‘ then find the value of the following expression.
9 × 3 + 6 ÷ 2 = ?
20
10
12
16
Correct answer
20
If G + H means G is daughter of H, G- H means G is sister H and G * H means G is husband of H, which of the following shows that I is the daughter of H?
I – J + F * H
I + J - F * H
I – J * F + H
I * J - F + H
Correct answer
I – J + F * H
Which of the following Venn diagrams best represents the relationship between Indians, doctors and women?
Correct answer
Given below are two statement, followed by two conclusion, I and II. You have to consider the statement 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, follow(s) from the given statements.
Statement 1: No quadrilaterals are polygons.
Statement 2: All polygons are rhombuses.
Conclusion I: Some rhombuses are quadrilaterals.
Conclusion II: Some rhombuses are polygons.
Neither I nor II follows
Only conclusion II follows
Only conclusion I follows
Both I and II follow
Correct answer
Neither I nor II follows
Which two signs should be interchanged to make the given equation correct?
9 ÷ 3 + 8 × 2 – 15 = 2
× and -
÷ and -
Correct answer
× and -
What is the minimum number of lines required to make the given image?
13
12
10
9
Correct answer
13
A series is give, with one term missing. Choose the correct alternative from the given ones that will complete the series.
OOOOOX, OOOOXX, OOOXXX, OOXXXX, ?
XXXXXX
OOXXXXX
OOXXXX
OXXXXX
Correct answer
XXXXXX
If C $ D means C is daughter of D, C & D means C is mother of D and C % D means C is son of D, then what does W $ X & Y % Z mean?
Z is wife of W
Z is mother of W
Z is father of W
Z is daughter of W
Correct answer
Z is wife of W
Given below is a question, followed by two arguments, I and II. You have to decide which of the given arguments, if any, is a strong argument, with respect to the question.
Question: Should advertisements be banned on television?
Argument I: Yes, advertisements are immoral.
Argument II: No, advertisements bring in revenue which helps reduce cost for viewers.
Only argument II is strong.
Only argument I is strong.
Neither I nor II is strong.
Both I and II are strong.
Correct answer
Only argument II is strong.
Select the option that is related to the third number in the same way as the second number is related to the first number.
-9/11 : 11/9 ∷ 13/2 : ?
3/7
2/13
-2/13
-7/3
Correct answer
3/7
Given below is a statement followed by two assumption numbered I and II. You have to decide which of the assumptions is/are implicit in the statement.
Statement: The human body produces Vitamin D when exposed to sunlight.
Assumption I: The human body will have Vitamin D even if it is not consumed via food.
Assumption II: A large portion of the global population suffers from Vitamin D deficiency.
Both I and II are implicit
Only assumption II is implicit
Neither I nor II is implicit
Only assumption I is implicit
Correct answer
Both I and II are implicit
A salesperson starts from his office and drives 2 km east, then turns north and drives 7 km, then turns to his right and drives 6 km, then turns south and drives 7 km. Where is he now with respect to his starting position?
8 km east
4 km west
4 km east
8 km west
Correct answer
8 km east
Unscramble the letters in the words given below and find the odd word out.
FLOW
ILNO
ERTIG
WCO
Correct answer
FLOW
Find the odd group of letters from the given alternatives.
EFG
PQR
VWX
HJL
Correct answer
EFG
Choose the figure that is different from the rest.
Correct answer
In a code language, 295 means ‘water is liquid’, 549 means ‘oil is liquid’ and 824 means ‘oil on water.’ Find the code for ‘on’.
4
2
8
5
Correct answer
4
In the following figure, square represents Chinese, triangle represents dancers, circle represents male and rectangle represents architects. Which set of letters represents dancers who are male?
DEIG
DEF
IGH
GEF
Correct answer
DEIG
The abbreviation AC in an engineering drawing stands for __________.
Across Corners
Aerial Cut
Attached Circle
Air Conditioning
Correct answer
Across Corners
Greater the value of _______ of a material, the more rapidly it will conduct heat.
melting point
latent heat
regelation
thermal conductivity
Correct answer
melting point
The effort applied to move a load is 15 units and the mechanical advantage is observed to be 3. Find the load.
5 units
3 units
15 units
45 units
Correct answer
5 units
What is the unit's digit in 366 × 641 × 753
8
3
6
7
Correct answer
8
If the width of a standard engineering drawing sheet is 841 mm, then its length would be ________ mm.
1189
1250
1000
1216
Correct answer
1189
A 200 g block of iron was heated from 30°C to 60°C. How much heat was transferred to the block (specific heat of iron is 450 Jkg-1K-1)?
6000 J
27 J
2700 J
270 J
Correct answer
6000 J
If a machine overcomes a load 'L' and the distance travelled by the load is 'Ld', the work done by the load will be __________.
L × Ld
\(\rm \frac{L}{Ld}\)
\(\rm \frac{Ld}{L}\)
\(\rm \frac{1}{L \times Ld}\)
Correct answer
L × Ld
A brass rod (thermal conductivity 109 J/s m K) has an area of cross section 0.04 m2 and length 20 cm. If the two end of the rod are maintained at a temperature difference of 200°C, the rate of heat flow through the rod is ________.
3.42 kJ/s
2.32 kJ/s
4.36 kJ/s
5.80 kJ/s
Correct answer
3.42 kJ/s
The effort in a class 1 lever is in __________ direction(s).
three
multiple
two
one
Correct answer
three
The velocity ratio of a simple machine is the ratio of distance traveled by the ________ to the distance traveled by the ________ in the machine.
load; load
effort; load
load; effort
effort; effort
Correct answer
load; load
If straight lines are drawn from various points on the contour of an object to meet a plane, the figure obtained on the plane is called the _______ of the object.
development
dimensioning
projection
animation
Correct answer
development
A _______ is a theoretical exact plane, axis or point location that GD & T or dimensional tolerances are referenced to.
flange
frame
section
datum
Correct answer
flange
Molar specific heat capacity of a substance is _________.
\(\left(\frac{1}{\mu}\right)\left( \frac{\Delta Q}{\Delta T} \right) \)
\(\mu \left( \frac{\Delta Q}{\Delta T} \right)\)
\(\left(\frac{1}{\mu}\right)\left( \frac{\Delta T}{\Delta Q} \right)\)
\(\mu \left( \frac{\Delta T}{\Delta Q} \right)\)
Correct answer
\(\left(\frac{1}{\mu}\right)\left( \frac{\Delta Q}{\Delta T} \right) \)
In engineering drawing, the letters LH signifies __________.
Level Hide
Left Hand
Low Heat
Limit of Height
Correct answer
Level Hide
Identify the material having high coefficient of volume expansion.
Brass
Alcohol
Glass
Water
Correct answer
Brass
An object starts from rest at x = 0 m and moves with a constant acceleration of 1.6 m/s2 along the x-axis. During its journey from x = 12.8 m to x = 20.0 m, its average velocity will be __________.
7.2 m/s
3.6 m/s
8.8 m/s
2.4 m/s
Correct answer
7.2 m/s
You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.
Question: What was the discount percent offered on the soap by the store?
Statements:
I) The store is giving 1 soap free on purchase of three.
II) Rs. 10 discount is offered on purchase of soap worth 36.
II alone is sufficient while I alone is not sufficient
I alone is sufficient while II alone is not sufficient
Neither I nor II is sufficient
Either I or II is sufficient
Correct answer
II alone is sufficient while I alone is not sufficient
In diesel cycle combustion takes place at
Constant volume
Constant temperature and pressure
Constant temperature
Constant pressure
Correct answer
Constant volume
Identify the instrument used for checking flatness and squareness of a surface?
Go Gauge
Try square
Vernier height gauge
Centre punch
Correct answer
Go Gauge
The purpose of dynamo is - Choose the correct option.
Act as reservoir of electrical energy
Supply electric power
Convert mechanical energy into electrical energy
Continually recharge the battery
Correct answer
Act as reservoir of electrical energy
The device, which is used to measure the brake power of an engine is called - Choose the correct answer.
Dynamo meter
Energy meter
Torque wrench
Indicator
Correct answer
Dynamo meter
Belt slackness is due to _______.
Worn shaft
Worn chain
Worn gear
Worn sprocket
Correct answer
Worn shaft
When using Vernier Height Gauge, it should be placed at _______.
Vee Block
Crank shaft
Cylinder head
Surface plate
Correct answer
Vee Block
A hole is drilled between the crankshaft main journal and crank pin for
Lubricating the connecting rod bearings
Reducing the crank shaft vibrations
Reducing crankshaft weight
Balancing the crank shaft
Correct answer
Lubricating the connecting rod bearings
Wire gauge is a measurement of a wire's - Choose the correct answer.
Brittleness
Tensile strength
Diameter
Hardness
Correct answer
Brittleness
A lubricant oil is needed to run the machine ________
quickly
With increased friction
With cleanliness
Without noise
Correct answer
quickly
The instrument used to measure high temperature in the furnace is
Colorimeter
Barometer
Thermometer
Pyrometer
Correct answer
Colorimeter
Identify the point angle of a Centre punch from the given options.
30°
90°
120°
60°
Correct answer
30°
Ammeter is used for measurement of ________.
Resistance
Power
Current
Voltage
Correct answer
Resistance
A cutting tool used to finish and enlarge a hole is known as
Drill
Die
Tap
Reamer
Correct answer
Drill
The drive for the diesel fuel feed pump is taken from the
Crankshaft
Timing gears
Fuel injection camshaft
Engine camshaft
Correct answer
Crankshaft
The stroke of an engine is _____.
Length of connecting rod
The distance between TDC and BDC
Internal diameter of cylinder
Volume of cylinder
Correct answer
Length of connecting rod
Scavenging is done to maintain
Oil pressure
Fuel consumption
Power output
Speed
Correct answer
Oil pressure
Much of the heat in the exhaust gases may be recovered by the use of
Heat-exchanger
Manifold
Muffler
Tail pipe
Correct answer
Heat-exchanger
A depth micrometer can be used to measure _______.
Diameter of bore
Thickness of the bore
Roundness of the bore
Length of the bore
Correct answer
Diameter of bore
Clearance between mating parts is measured by
Feeler gauge
"Go" gauge
Dial gauge
Caliper gauge
Correct answer
Feeler gauge
The purpose of the injector provided on a diesel engine is to inject
Lubricant in the bearings
Fuel in the cylinders
Lubricant in the cylinder
Coolant in the cylinder jacket
Correct answer
Lubricant in the bearings
Indicated work per cycle is equal to
Mean effective pressure x stroke volume
Mean effective pressure x bore diameter
Mean effective pressure x bore arc
Mean effective pressure x stroke length
Correct answer
Mean effective pressure x stroke volume
The air filters used in high-speed diesel engines are generally of the type
Dry filters
Heaters
Oil bath filters
Impingement filters
Correct answer
Dry filters
Cyaniding and nitriding are two methods of
Normalising
Hardening
Tempering
Case hardening
Correct answer
Normalising
Higher efficiency can be achieved of an OTTO cycle by increasing the ________.
Fuel intake
stroke length
Cylinder size
Compression ratio
Correct answer
Fuel intake
The ignition condenser
Reduces arcing at contacts
Protects plugs from load
Reduces secondary spark
Increases contact arcing
Correct answer
Reduces arcing at contacts
Water circulation in a thermo-siphon cooling system is caused by
The change in density of the water
A belt driven water impeller
Conduction currents
A gear driven water pump
Correct answer
The change in density of the water
A cutting tool used to cut outside threads is called
Reamer
Tap
Drill
Die
Correct answer
Reamer
Piston rings are generally made of
Cast iron
Brass
Aluminium
Copper
Correct answer
Cast iron
The grooves provided on the entire length of the body of a twist drill are called
webs
Flutes
Lips
Margins
Correct answer
webs
Which of the following is not a part of the combination set?
Socket spanners
Steel rule
Square head
Protractor head
Correct answer
Socket spanners
The vernier caliper is used for measuring-
Roundness
Shape
Flatness
Thickness
Correct answer
Roundness
The instrument used to measure cylinder bore diameter is
Vernier caliper
Outside micrometer
Bore dial gauge
Telescopic gauge
Correct answer
Vernier caliper
The point angle of twist drill for general purposes is
60°
90°
135°
118°
Correct answer
60°
What is the material used for making Pistons?
Brass
Galvanised Copper
Aluminum Alloy
Steel
Correct answer
Brass
The study of pneumatics deals with systems driven by _______.
Oil
Water
Air
Solid matter
Correct answer
Oil
When tolerance is given on one side of the basic dimension it is called
Allowance system
Unilateral tolerance
Bilateral tolerance
Tolerance system
Correct answer
Allowance system
The diesel engine usually emits excessive smoke during
Accelerating
Decelerating
Starting
Idling
Correct answer
Accelerating
In a diesel engine, feed pump is located on
Fuel tank
Fuel filter
Cylinder head
F.I.P
Correct answer
Fuel tank
Why is air cleaner filled with oil?
To lubricate
To prevent dust and dirt from atmosphere
To pressurize
To accelerate
Correct answer
To lubricate
The connecting rod is made up of
Alloy steel
Aluminium
Cast iron
Mild steel
Correct answer
Alloy steel
The purpose of thermostat is to keep the engine
Warm
Cool
At desired temperature
Hot
Correct answer
Warm
An air chisel is used brake or cut metal objects apart. How is it operated?
Pneumatically
Magnetically
Frictionally
Hydraulically
Correct answer
Pneumatically
The ratio between BHP and IHP is called
Engine efficiency
Power efficiency
Mechanical efficiency
Thermal efficiency
Correct answer
Engine efficiency
A governor is a
Pressure sensitive device
Temperature sensitive device
Speed sensitive device
Vacuum sensitive device
Correct answer
Pressure sensitive device
In starting of diesel engines by electric starting what is used to supply power to the starter motor?
Battery
Rectifier
Dynamo
Generator
Correct answer
Battery
What is the part of the universal surface gauge which helps to draw a parallel line along a dotted edge known as?
Fine adjusting screw
Center punch
Scriber
Guide pins
Correct answer
Fine adjusting screw
Combustion of the air-fuel mixture in petrol engine takes place through _______.
Intestinal cells
Cylinder
Piston
The elimination cells
Correct answer
Intestinal cells
In a diesel engine, fuel is ignited by _______.
Spark plug
Injector
Compressed air temperature properties
Glow Plug
Correct answer
Spark plug
What is the SI unit of pressure?
Newton
Joule
Pascal
Dyne
Correct answer
Newton
The function of the alternator in a vehicle is to
Measure the current
Discharge the battery
Measure the voltage
Charge the battery
Correct answer
Measure the current
What is the composition of Gunmetal?
Lead and nickel
Copper, Tin and zinc
Copper, zinc and nickel
Lead and zinc
Correct answer
Lead and nickel
What is the angle of the drill bit?
118°
115°
119°
59°
Correct answer
118°
The electronic ignition system is triggered on and off through _______.
Contact breaker
Trigger
Diode
Permanent magnet
Correct answer
Contact breaker
To increase the output voltage, battery cells are connected in
inclined
Series
Parallel
Series-parallel
Correct answer
inclined
Which of the following are not symptoms of poor clutch operation?
Vibration of engine
Difficulty in gear shifting when pedal press
pedal gets stuck when pressed
increase in engine noise when pedal press
Correct answer
Vibration of engine
A rivet is specified by its diameter of ______.
Shank
Length
Tail
The head
Correct answer
Shank
What is the principle on which brakes work?
Vibration
Friction
Suction
Dragging
Correct answer
Vibration
The coolant used for reaming aluminum work piece is
Air pressure
Water
Kerosene
Lard oil
Correct answer
Air pressure
What is drawn in the cylinder of diesel engine during suction stroke?
Pure air alone
A mixture of air and fuel
CNG gas
Diesel
Correct answer
Pure air alone
Micrometer can measure upto ________
0.005 mm
Microns size
0.1 mm
Least count
Correct answer
0.005 mm
Identify the material used for twist drill.
Alloy steel
H.S.S
Carbide steel
Mild steel
Correct answer
Alloy steel
Vernier depth gauge is used for measuring
Pitch circle diameter
Round dimension
Step, depth of blind hole
Internal dimension
Correct answer
Pitch circle diameter
Which one of the following fuel injection systems were originally used in large stationary and marine engines and is now seldom used?
Mechanical injection
Air injection
Solid injection
Airless injection
Correct answer
Mechanical injection
The principle of a radiator of an engine cooling system is to
Increase the air speed as it flows over the hot surface
Spread out the hot water over a large area
Acts as a reservoir for the water
Cause a heat flow by convection currents
Correct answer
Increase the air speed as it flows over the hot surface
The operation of the governor can only be effective if the system is airtight which type of governor is this?
Mechanical
Servo
Pneumatic
Hydraulic
Correct answer
Mechanical
A noise produced in the cylinder of a diesel engine during combustion, usually when the fuel oil has a low ignition quality is called
Fuel knock
Fuel explosion
Fuel thrust
Fuel burst
Correct answer
Fuel knock
The tool, which is used for laying out diameter is
Scriber
Divider
Outside micrometer
Tri square
Correct answer
Scriber
To measure the cylinder bore one of these instruments is used. Identify.
Screw gauge
Dial indicator
Caliper
Micrometer
Correct answer
Screw gauge
Air lock in fuel line will cause
Engine idling high
Injector pressure is too high
Late starting and erratic running
Excess delivery from FI pump
Correct answer
Engine idling high
The rate of doing work is called ________.
Power
Energy
Force
Torque
Correct answer
Power
A maintenance free battery
Does not contain water
Has lead-calcium plate grid
Does not contain acid
Has lead-antimony plate grid
Correct answer
Does not contain water
Why is free play in clutch needed?
to prevent the clutch from heating up
to increase speed of engine rpm
to improve efficiency of braking
to facilitate lubrication by oil
Correct answer
to prevent the clutch from heating up
What is the other name for Jenny spanners?
Outside caliper
Joint spanner
Inside caliper
Odd-leg caliper
Correct answer
Outside caliper
A mechanism used to control the speed of an engine is called
Speedometer
Regulator
Odometer
Governor
Correct answer
Speedometer
A fuse in an electrical circuit 'blows' as a result of a high
Voltage caused by a short circuit
Current flow caused by an open circuit
Voltage caused by an open circuit
Current flow caused by a short circuit
Correct answer
Voltage caused by a short circuit
175 questions in the full paper