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Moving Iron instruments can be used on:

Moving Iron instruments can be used on:


  1. ac and dc both
  2. ac only
  3. dc only
  4. none of the above
discuss
In spring control instruments, controlling torque:

In spring control instruments, controlling torque:


  1. can be adjusted easily
  2. cannot be adjusted easily
  3. remains the same
  4. varies with the load
discuss
Chemical effect is used for the operation of:

Chemical effect is used for the operation of:


  1. voltmeter
  2. ammeter
  3. ampere hour meter
  4. kwh meter
discuss
The deflection torque can be produced by:

The deflection torque can be produced by:


  1. gravity control
  2. spring control
  3. air friction
  4. magneitcally
discuss
Moving coil instruments are:

Moving coil instruments are:


  1. permanent magnet type
  2. dynamometer type
  3. induction type
  4. permanent magnet and dynamometer type
discuss
For increasing the range of an ammeter, connect:

For increasing the range of an ammeter, connect:


  1. a high value resistance in series with the ammeter coil
  2. a high value resistance in parallel with the ammeter coil
  3. a low value resistance in parallel with the ammeter coil
  4. a low value resistance in series with the ammeter coil
discuss
A galvanometer can be used for measuring current and voltage of a circuitby:

A galvanometer can be used for measuring current and voltage of a circuitby:


  1. shunt only
  2. connecting high value of resistance in series only
  3. shunt for measuring current and high resistance in series for voltage
  4. without shunt and series resistance
discuss
The energy consumption of MI instrument as compared to MC instrument is:

The energy consumption of MI instrument as compared to MC instrument is:


  1. same
  2. more
  3. less
  4. very small
discuss
An ammeter requires a change of 4A in its coil to produce a pointer deflectionof 8mm then its sensitivity is

An ammeter requires a change of 4A in its coil to produce a pointer deflectionof 8mm then its sensitivity is


  1. 2.5 mm/a
  2. 2.0 mm/a
  3. 0.5 mm/a
  4. none of the above
discuss
Electrostatic type instruments are mainly used for measurement of

Electrostatic type instruments are mainly used for measurement of


  1. heavy currents
  2. low currents
  3. low voltages
  4. high voltages
discuss
Measurement range of a voltmeter can be extended by using:

Measurement range of a voltmeter can be extended by using:


  1. high current resistance
  2. high series resistance
  3. low shunt resistance
  4. low series resistance
discuss
Which of the following voltmeter have least power consumption:

Which of the following voltmeter have least power consumption:


  1. moving iron
  2. hot-wire
  3. electrostatic
  4. induction type
discuss
Which of the following instruments have least torque/weight ratio:

Which of the following instruments have least torque/weight ratio:


  1. dynamometer type
  2. pmmc
  3. attraction type moving iron
  4. repulsion type moving iron
discuss
Fluid friction damping can be used in

Fluid friction damping can be used in


  1. horizontally mounted instruments
  2. vertically mounted instruments
  3. both horizontally mounted instruments and vertically mounted instruments
  4. none of the above
discuss
The ratio and phase angle errors in potential transformer may be reduced by

The ratio and phase angle errors in potential transformer may be reduced by


  1. increasing the exciting current
  2. increasing the resistance and leakage reactance in the transformer
  3. by not employing turns compensation
  4. none of the above
discuss
A voltmeter should have

A voltmeter should have


  1. low internal resistance
  2. high internal resistance
  3. electrostatic plates
  4. a sensitive amplifier
discuss
The major advantage of electromagnet type meter over a permanent magnetmeter is

The major advantage of electromagnet type meter over a permanent magnetmeter is


  1. the electromagnet meter costs much less
  2. the permanent magnet meter has a more sluggish coil
  3. the electromagnet meter need not be aligned with the earth’s magnetic field
  4. the electromagnet meter is more rugged
discuss
The change in the direction of a compass needle, when a current carrying wireis brought near, is called

The change in the direction of a compass needle, when a current carrying wireis brought near, is called


  1. electromagnetic deflection
  2. electroscopic force
  3. magnetic force
  4. electrostatic force
discuss
The use of _____ instruments is merely confined within laboratories asstandardizing instruments

 The use of _____ instruments is merely confined within laboratories asstandardizing instruments.


  1. absolute
  2. indicating
  3. recording
  4. integrating
discuss
Which of the following instruments indicate the instantaneous value of theelectrical quantity being measured at the time at which it is being measured ?

Which of the following instruments indicate the instantaneous value of theelectrical quantity being measured at the time at which it is being measured ?


  1. absolute instruments
  2. indicating instruments
  3. recording instruments
  4. integrating instruments
discuss
total MCQs: 120

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