Essentials Of Indicating Instrument - 1 - MCQs with answers

Essentials Of Indicating Instrument - 1 - MCQs with answers


Q1. The electromagnetic effect is generally utilized for

A. Ammeters
B. Voltmeters
C. Wattmeters and watt-hour meters
D. All of these

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ANSWER: D. All of these



Q2. The electrostatic effect is utilized for

A. Ammeters
B. Voltmeters
C. D.C. ampere-hour meters
D. Wattmeters

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ANSWER: B. Voltmeters



Q3. Integrating instruments is the subdivision of the secondary instruments. The example for integrating instruments is

A. Ampere-hour meters
B. Watt-hour meters
C. Wattmeters
D. Ampere-hour and watt-hour meters

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ANSWER: D. Ampere-hour and watt-hour meters



Q4. The moving system in the indicating instruments is subjected to

A. Deflecting torque
B. Controlling torque
C. Damping torque
D. All the above

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ANSWER: D. All the above



Q5. If the deflection torques on moving system increases then the controlling torque

A. Increases
B. Decreases
C. Remains same
D. None of these

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ANSWER: A. Increases



Q6. In the absence of the restoring torque, the pointer

A. Will not deflect from its initial position

B. Will deflect but would not return to its zero position on removing current

C. Will deflect and return to its zero position on removing current

D. Will swing from minimum to maximum position

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ANSWER: B. Will deflect but would not return to its zero position on removing current



Q7. In indicating instruments, the controlling and restoring torque can be obtained by using

A. Spring
B. Gravity
C. Either by spring or by gravity
D. Neither by spring nor by gravity

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ANSWER: C. Either by spring or by gravity



Q8. The restoring torque in a spring controlled indicating instrument is

A. Directly proportional to the angle of deflection of moving system

B. Directly proportional to the sine of angle of deflection of moving system

C. Inversely proportional to the angle of deflection of moving system

D. Directly proportional to the square of the angle of deflection of moving system

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ANSWER: A. Directly proportional to the angle of deflection of moving system



Q9. The deflecting torque in a permanent magnet moving coil type instrument is

A. Directly proportional to the angle of deflection of moving system
B. Directly proportional to the current flowing through it
C. Directly proportional to the current flowing through it
D. Inversely proportional to the current flowing through it

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ANSWER: B. Directly proportional to the current flowing through it



Q10. The spring which is used for producing controlling torque in indicating instruments are made up of materials which is/are

A. Non-magnetic
B. Not subjected to much fatigue
C. Low specific resistance and low temperature resistance coefficient
D. All of these

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ANSWER: D. All of these


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    Discussion

  • RE: Essentials Of Indicating Instrument - 1 - MCQs with answers -Mehmood khan (03/31/16)
  • Which is the integarting instrument?