9.

10.

11

12,

18.

14.

18.

16.

Which of the following circuit elements will oppose the change in the circuit current?

(ക) Inductance (B) Resistance
(0 Capacitance (D) All of the above
The colour of light of mercury vapour lamp is :
(A) Greenish blue (B) Yellow
(C) Pink (D) White
Which of the following frequencies has the longest time period?
(A) 1H=z (B) 1kHz
(C) ‏ع18‎ (0) 10kHz
In 8 generator maximum value of e.m.f. is generated within the coil axis is at ©
(4) 45° with field axis (B) 90° with field axis
(0 180° with field axis () Zero degree with field axis

A choke coil of an operating fluorescent lamp is short-circuited. What is the consequence?
(A) The lamp becomes brighter
(ए) The lamp becomes less bright
(८) The current becomes so large that it damages the tube
(D) ‘The short circuit is noticed only after the lamp is switched ‘ON" again

A contactor eoil 19 designed for 220V DC. What happens if it is connected to 220 V AC?
(A) Too large a current is drawn by the coil and it is destroyed

(B) Too small a current is drawn by the coil and the operation of the contactor is no
longer certain

(C) Tt draws the same current
(M) It works better

A capacitor is connected across a 200 V AC line, Its minimum voltage rating should be :
(A) 100 volt ൫ 200 volt
(0 300 ೪01 (D) 400 volt

The power factor of 3-phase load is less than 0.5. While measuring power by two
watt meters :

(ಗ) one of the wattmeters gives zero reading

(ए) one of the wattmeters gives negative reading
(മ both wattmeters give positive reading

(D) one of the wattmeters kicks backward

035/2016 4 A