Computer Programming MCQs

5739 MCQs  (Page 289 of 574)

A dynamometer wattmeter can be used for______________?
A. Both d.c. and a.c.
B. D.c. only
C. A.c. only
D. Any of the above
An induction wattmeter can be used for_________________?
A. Both d.c. and a.c.
B. D.c. only
C. A.c. only
D. Any of the above
In a low power factor wattmeter the compensating coil is connected_______________?
A. In series with current coil
B. In parallel with current coil
C. In series with pressure coil
D. In parallel with pressure coil
The scale of a rectifier instrument is_________________?
A. Linear
B. Non-linear
C. Either a. or b.
D. Neither a. nor b.
In a low power factor wattmeter the pressure coil is connected_______________?
A. To the supply side of the current coil
B. To the load side of the current coil
C. In any of the two meters at connection
D. None of the above
A voltage of about 200 V can be measured__________________?
A. Directly by a d.c. potentiometer
B. A d.c. potentiometer in conjunction with a volt ratio box
C. A d.c. potentiometer in conjunction with a known resistance
D. None of the above
Basically a potentiometer is a device for________________?
A. Comparing two voltages
B. Measuring a current
C. Comparing two currents
D. Measuring a voltage