Question86:-The valve(s) closed during compression stroke of an IC engine is/are
A:-Inlet valve
B:-Exhaust valve
C:-Both inlet and exhaust valve
D:-None of the above
Correct Answer:- Option-C
Question87:-The cooling tower in a steam thermal power plant is a device for
A:-Condensing steam into water
B:-Cooling exhaust gas coming out of a boiler
C:-Reducing temperature of superheated steam
D:-Reducing temperature of cooling water used in a condenser
Correct Answer:- Option-D
Question88:-The role of a moderator in a nuclear power plant is
A:-To absorb neutrons fully
B:-To control speed of neutrons
C:-Both 1 and 2 above depending on the need
D:-None of the above
Correct Answer:- Option-B
Question89:-The role of a surge tank in a hydroelectric power plant is
A:-To absorb sudden rises of pressure by storing water
B:-To store extra water during a brief drop of pressure
C:-Both 1 and 2 above
D:-To reduce the speed of the turbine when the level of dam is high
Correct Answer:- Option-C
Question90:-The following system in automobile diverts the power at right angles towards the driving wheels
A:-Torque tube
B:-Transfer case
C:-Final drive
D:-Differential
Correct Answer:- Option-C
Question91:-In a series RL circuit excited by a voltage v = *V_(m)sinOmegat*
A:-current lags the applied voltage
B:-current leads the applied voltage
C:-current is in phase with the applied voltage
D:-voltage across L and R are equal
Correct Answer:- Option-A
Question92:-In a parallel RC electric circuit is same for each element.
A:-current
B:-voltage
C:-power
D:-none of the above
Correct Answer:- Option-B
Question93:-Across the surface of a charged conductor, the electric
A:-field is continuous
B:-potential is continuous
ield is discontinuous
D:-none of the above
Correct Answer:- Option-C
Question94:-The unit of electric energy is
A:-ampere
B:-voltage
:-watt
D:-watthour
Correct Answer:- Option-D

Question95:-An alternating current source having voltage E = 220 sin (‘ omegat+Pi'/2) in an ac circuit . If the current draws
from the circuit is | = 20 sin (‘omegat-Pi'/2), the impedance of the circuit is