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MCQs 1: Which of the following are integrating instruments ?

Ammeters Voltmeters Wattmeters Ampere-hour and watt-hour meters
Answer Explanation

MCQs 2: The spring material used in a spring control device should have the following property?

Should be non-magnetic Most be of low temperature co-efficient Should have low specific resistance Should not be subjected to fatigue All of the above
Answer Explanation

MCQs 3: A moving-coil permanent-magnet instrument can be used as ____________by using a low resistance shunt?

ammeter voltmeter flux-meter ballistic galvanometer
Answer Explanation

MCQs 4: Which of the following essential features is possessed by an indicating instrument?

Deflecting device Controlling device Damping device All of the above
Answer Explanation

MCQs 5: Which of the following devices may be used for extending the range of instruments ?

Shunts Multipliers Current transformers Potential transformers All of the above
Answer Explanation

MCQs 6: A __________ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly___________?

deflecting controlling damping any of the above
Answer Explanation

MCQs 7: Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?

Absolute instruments Indicating instruments Recording instruments Integrating instruments
Answer Explanation

MCQs 8: According to application, instruments are classified as_____________?

switch board portable both A. and B. moving coil moving iron
Answer Explanation

MCQs 9: Which of the following essential features is possessed by an indicating instrument ?

Deflecting device Controlling device Damping device All of the above
Answer Explanation

MCQs 10: Which of the following properties a damping oil must possess ?

Must be a good insulator Should be non-evaporating Should not have corrosive action upon the metal of the vane The viscosity of the oil should not change with the temperature All of the above
Answer Explanation

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