27.

25.

28.

81.

42.

88.

Sweep of ceiling fan refers to :
= (A) radius of circle formed by its rotation
(0) double the length of the blade
(0 the distance from the centre of motor to tip of blade
(D) double the distance from centre of motor to tip of blade

Which of the electrical instruments have to be connected in the same manner for
measurement?

(ಗೆ) frequency meter and P.F. meter (B) voltmeter and P.F. meter

(0 voltmeter and frequency meter (D) wattmeter and voltmeter

Capacitance is not affected by :

(ಗಿ) plate 87೧8 (ए) distance between plates

(© di-electric material (1) frequency
The resistance of an aluminium wire of a given length and diameter when compared with
that of copper wire is :

(ക same in the case of small diameter wires only

(ए) more irrespective of the sizes taken

[0 Iless irrespective of the sizes taken

(1) equal for certain specified length and diameter

A chake coil of an operating fluorescent lamp is short circuited. What is the consequence?
(ക the lamp becomes brighter
(B) the lamp becomes less bright
(C) the current becomes so large that it damages the tube

(D) the short circuit is noticed only after the lamp is switched on again

The unit of inductance is henry and the unit of inductive reactance is :

(ക) henry (3) henry per metre

(¢) ohms (D) ohms per henry
A double capacitor motor of 0.5 kW when connected to 240 V 50 Hz maias at power factor 0.8
takes a full load eurrent of :

ക 18൭ (8) 20A

(9 2.3५ D) 2.64

36/2014 6 A