TasDia Network
TasDia Network

MCQs 1: In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at_____________?

0° 60° 90° 120°
Answer Explanation

MCQs 2: In a Weston frequency meter, the magnetic axes of the two fixed coils are__________________?

parallel perpendicular inclined at 60° inclined at 120°
Answer Explanation

MCQs 3: In a single phase power factor meter the phase difference between the currents in the two pressure coils is___________________?

exactly 0° approximately 0° exactly 90° approximately 90°
Answer Explanation

MCQs 4: A power factor meter has________________?

one current circuit and two pressure circuits one current circuit and one pressure circuit two current circuits and one pres¬sure circuit none of the above
Answer Explanation

MCQs 5: To avoid the effect of stray magnetic field in A.C. bridges we can use_______________?

magnetic screening Wagner earthing device wave filters any of the above
Answer Explanation

MCQs 6: For measurement of mutual inductance we can use________________?

Anderson bridge Maxwell’s bridge Heaviside bridge Any of the above
Answer Explanation

MCQs 7: In an AC. co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be_____________?

out of phase by 90° out of phase by 60° out of phase by 30° out of phase by 0° out of phase by 180°
Answer Explanation

MCQs 8: Wagner earthing device is used to eliminate errors due to________________?

electrostatic coupling electromagnetic coupling both A. and B. none of the above
Answer Explanation

MCQs 9: For measurement of inductance having high value, we should use______________?

Maxwell’s bridge Maxwell Wein bridge Hay’s bridge Any of the above
Answer Explanation

MCQs 10: A universal RLC bridge uses_________________?

Maxwell bridge configuration for measurement of inductance and De Santas bridge for measurement of capacitance Maxwell Wein bridge for measurement of inductance and modified De Santy’s bridge for measurement of capacitance Maxwell Wein bridge for measurement of inductance and Wein bridge for measurement of capacitance Any of the above
Answer Explanation

MCQs 11: In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be_______________?

unity 0.5 0.3 zero
Answer Explanation

MCQs 12: To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken_______________?

from a source which is not the same as the unknown voltage from a battery from the same source as the unknown voltage any of the above
Answer Explanation

MCQs 13: A phase shifting transformer is used in conjunction with_______________?

D.C. potentiometer Drysdale potentiometer A.C. co-ordinate potentiometer Crompton potentiometer
Answer Explanation

MCQs 14: The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a _________________?

single-phase winding two-phase winding three-phase winding any of the above
Answer Explanation

MCQs 15: Basically a potentiometer is a device for________________?

comparing two voltages measuring a current comparing two currents measuring a voltage none of the above
Answer Explanation

MCQs 16: A voltage of about 200 V can be measured__________________?

directly by a D.C. potentiometer a D.C. potentiometer in conjunction with a volt ratio box a D.C. potentiometer in conjunction with a known resistance none of the above
Answer Explanation

MCQs 17: In a meggar controlling torque is provided by______________?

spring gravity coil eddy current
Answer Explanation

MCQs 18: In a low power factor wattmeter the pressure coil is connected_______________?

to the supply side of the current coil to the load side of the current coil in any of the two meters at connection none of the above
Answer Explanation

MCQs 19: The scale of a rectifier instrument is_________________?

linear non-linear either A. or B. neither A. nor B.
Answer Explanation

MCQs 20: The resistance in the circuit of the moving coil of a dynamometer wattmeter should be_____________?

almost zero low high none of the above
Answer Explanation

Related Topics

About Us | Contact Us | Privacy Policy
ABOUT US
Category
Who We Are

TasDia Network, this platform not only provides you the best educational stuff but besides this, we are creating thousands of new ideas to making your signature and planning much more on a single platform.

© 2020-2023, TasDia Network

All rights of the publication are reserved by tasdia.com.