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Browse complete papersA Wheatstone bridge with resistors as shown in figure is connected to a 0.2 A current source. Find the voltage across the 0.2 A current source, if the 200 Ω resistor is shorted.
9 V
144 V
18 V
27 V
Correct answer
9 V
The molarity of a solution containing 5 gram of Sodium hydroxide (NaOH) in 500 millilitre solution is : (Take atomic weights of elements as : Na = 23, O = 16, H = 1)
0.0625 mol/litre
0.5 mol/litre
0.025 mol/litre
0.25 mol/litre
Correct answer
0.0625 mol/litre
The following statements (S1, S2, S3, S4) pertain to Dissolved oxygen in Surface water.
S1 : Warm water holds more dissolved oxygen than Cold water.
S2 : Respiration of organisms living in water as well as in sediments cause reduction in the available dissolved oxygen.
S3 : Water holds less oxygen at higher altitudes.
S4 : During day time, Photosynthesis activity in surface water leads to decrease in the Dissolved oxygen concentration.
Choose the correct statement(s)
S2, S3 only
S1 only
S2, S3, and S4 only
S1, S4 only
Correct answer
S2, S3 only
The sum to infinity of a Geometric Progression series is three times the first term. Find the common ratio of the progression.
\(1\over3\)
\(3\over4\)
\(2\over3\)
\(1\over4\)
Correct answer
\(1\over3\)
Three like parallel forces 30 kN, 20 kN, and 10 kN are acting at points A, B, and C respectively on a straight line as in Figure. The distances are AB = 2 m, and BC = 3 m respectively. Determine the resultant force and its point of action from end A.
60 kN (↑) acting at a distance of 3 m
60 kN (↓) acting at a distance of 2.5 m
60 kN (↑) acting at a distance of 3.5 m
60 kN (↑) acting at a distance of 1.5 m
Correct answer
60 kN (↑) acting at a distance of 3 m
The figure shows a plane lamina and consists of a rectangular area ABCE and a triangular area CDE. Find the distance to the centroid of the section shown in the figure from the base AB in the Y-direction.
2.8 cm
3.2 cm
2 cm
2.5 cm
Correct answer
2.8 cm
Some features of an earthing system with figure showing details are given.
Unearthed transformer neutral, earthed frame : IT System Earthing.
Transformer neutral earthed and frame earthed : TT Earthing system.
Transformer neutral earthed, frame connected to neutral : TN-C Earthing system
Transformer neutral earthed, frame connected to neutral : TN-S Earthing system
Correct answer
Unearthed transformer neutral, earthed frame : IT System Earthing.
Find the magnitude and direction of the resultant R of four concurrent forces (2P and 4 P in vertical directions; P and 3P in Horizontal directions) acting at a point O as shown in Figure.
5√2 P, acting at 45° (anticlockwise dir.) with respect to 4P force
5 P, acting at 45° (anticlockwise dir.) with respect to 3P force
2√2 P, acting at 45° (anticlockwise dir.) with respect to 3P force
3√2 P, acting at 45° (clockwise dir.) with respect to 2P force
Correct answer
5√2 P, acting at 45° (anticlockwise dir.) with respect to 4P force
A cyclist riding on a level road has to turn a corner of radius 50 m. Find the maximum speed with which the cyclist can travel without the fear of skidding. Assume the co-efficient of friction between the tyres and track as 0.2. (Take acceleration due to gravity = 10 m/s2)
10 m/s
14.1 m/s
4.5 m/s
12 m/s
Correct answer
10 m/s
A point charge 10 µC is located at origin (x = 0, y = 0) m, and another point charge 5 µC is placed on the point (x = 6, y = 8) m. in vacuum. Determine the electric force (in N units) on charge 5 µC. Assume the value of permittivity of free space (vacuum) ε0 = 9 × 10-12 C2.N-1.m-2
\(1\over36\ \pi\)
72 π
\(1\over72\ \pi\)
\(1\over18\ \pi\)
Correct answer
\(1\over36\ \pi\)