34.

35.

37.

89.

40.

For a single phase induction type energy meter, to obtain true value reading, the shunt
magnet flux must lag the applied voltage by :

(ക 180 degree (൫ 0degree
(0 45 degree (D) 90 degree

The hysteresis error in the instrument causes :
(ಗೆ) change in same reading when input is first increased and then decreased’
(B) slow response for increasing and decreasing input
(C) vibration is produced for increasing values of input
(D) overshoot during initial values in the scale

While measuring power in a 3 phase circuit by 2 wattmeter method, the wattmeter readings
will be equal and opposite when :
(ക pf=08 (ए) load is balanced

(ര) pf=05 (D) load is purely capacitive.

Thermocouples are :
(ക active transducers (B) passive transducers
(C) both active and passive (D) neither active nor passive

In spring controlled MI instruments. The scale is :
(ക uniform
(B) cramped at lower end and scattered at the upper end
(C) cramped at higher end and scattered ತ the lower end
(D) cramped at both lower end and the upper end

The controlling torque in a meggar is provided by:
(ക springs
(0) eddy currents
(C) weights added to moving system
(D) does not need any controlling torque arrangement

Swamping resistance is used to compensate the error due to :
(ಗಿ) temperature (0) humidity
(C) pressure (D) stray magnetic field
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