A. extend voltage range
B. measure voltage
C. compare voltage in a box
D. none of the above
Related Mcqs:
- An induction meter can handle current up to_____________?
A. 10 A
B. 30 A
C. 60 A
D. 100 A - Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to_____________?
A. improve its ventilation
B. eliminate creeping at no load
C. increase its deflecting torque
D. increase its braking torque - __________ instruments are those which measure the total quantity of electricity delivered in a particular time ?
A. Absolute
B. Indicating
C. Recording
D. Integrating - The chemical effect of current is used in ______________?
A. D.C. ammeter hour meter
B. D.C. ammeter
C. D.C. energy meter
D. none of the above - The switch board instruments________________?
A. should be mounted in vertical position
B. should be mounted in horizontal position
C. either A. or B.
D. neither A. nor B. - When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is____________?
A. short-circuited
B. all right
C. faulty - A power factor meter has________________?
A. one current circuit and two pressure circuits
B. one current circuit and one pressure circuit
C. two current circuits and one pres¬sure circuit
D. none of the above - In a Weston frequency meter, the magnetic axes of the two fixed coils are__________________?
A. parallel
B. perpendicular
C. inclined at 60°
D. inclined at 120° - Wattmeter cannot be designed on the principle of_________________?
A. electrostatic instrument
B. thermocouple instrument
C. moving iron instrument
D. electrodynamic instrument - Which of the following is measured by using a vector voltmeter ?
A. Amplifier gain and phase shift
B. Filler transfer functions
C. Complex insersion loss
D. All of the above
