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059/20

If the current in a zero-resistance wire AB is increased, the voltage ५, ४ across the
wire will

A) Decrease B) Increase

C) Remain constant D) None of these

Cutting an air gap in 8 magnetic circuit result in
A) Reduction of reluctance B) Increase in reluctance
C) No change in reluctance D) None of these

In a parallel RC circuit
A) 16 lags I, by 90 8) I, leads I, by 90
©) Ic and Ip are in phase 0) Ic lags Ip by 0

A 1000 W, 230 V electric kettle is connected in series with another similar kettle
and the combination is connected to 230 V supply. The total power drawn by the
combination will be
A) 1000 W B) Less than 1000 W
C) More than 1000 W D) Zero

The unit of the permittivity 15
A) Farad/metre 8) Farad—metre ೦) Farad/(metre)? 0) None of these

The coil span of de armature winding is made equal to pole switch in order to
A) Distribute the windings uniformly under different poles

B) Obtain a coil span of 180 electrical

C) Ensure the addition of emfs of consecutive turns

D) Obtain a full pitch winding

Which of the following type of generators does not require equalizers for satisfactorily
for parallel operation ?

A) Series B) Under compounded

C) Over compounded D) Flat compounded

In a DC motor, unidirectional torque is produced with the help of
A) Brushes B) Commutator
C) End plates D) Both A) and B)