C:-requires less maintenance
D:-greater risk of fire
Correct Answer:- Option-B
Question29:-In thermal power plant, the dearator is used mainly to
A:-remove air from condenser
B:-increases feed water temperature
C:-reduce steam pressure
D:-remove dissolve gases from free water
Correct Answer:-Question Cancelled
Question30:-The most commonly used moderator in nuclear power plant is
A:-heavy water
B:-concrete and brick
:-steel
D:-graphite
Correct Answer:- Option-D
Question31:-In a series RLC circuit having high Q factor, the current peaks at which frequency?
A:-Resonant frequency
B:-Greater than the resonant frequency
C:-Less than the resonant frequency
D:-None of these
Correct Answer:- Option-A
Question32:-The current ‘i(t)’ through a 1 Q resistor in series with an inductance is given by *i(t)=3+4 sin(100 t+45*@)*
amperes. The RMS value of the current and power dissipated in the circuit are
A:-7 A, 7 W respectively
-‘sqrt(17)* A, 170 W respectively
C:-‘sqrt(17)° A, 17 W respectively
D:-4 A, 16 W respectively
Correct Answer:- Option-C
Question33:-Earthing of electrical equipment is necessary for the protection against
A:-Over loading
B:-Voltage fluctuation
C:-Danger of electric shock
D:-High conductor temperature
Correct Answer:- Option-C

Question34:-Two heaters rated at 2000 W, 250 V each are connected in series across a 250 V, 50 Hz ac mains. The total
power drawn from the supply would be

A:-2000 W
B:-500 W
C:-250 W
D:-1000 W
Correct Answer:- Option-D
Question35:-A capacitor of 20 | is charged to a potential difference of 1000 V, the energy stored in the capacitor is
A:-0.01 J
B:-10 J
:-20 |
D:-100 J
Correct Answer:- Option-B
Question36:-A full wave rectifier is made of centre tapped transformer. The peak voltage difference measured between the
extreme ends of the secondary coil is 200 V. The Peak Inverse Voltage appearing across the diode is
A:-200 V
B:-100 V
C:-150 V
D:-400 V
Correct Answer:- Option-A
Question37:-A LED is connected in a +14 V dc power supply module for indication. A series resistor is required to be

connected to limit the current through the diode to 10 mA. Assume the voltage drop across the diode is equal to 2 V. Then
the series resistance will be

A:-1KQ
.2 1൭
C:-1.4 KQ