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Measurement and Instrumentation

Study 109 Electrical Engineering MCQs with correct answers and explanations.

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101Electrical EngineeringMedium

An instrument transformer is used to extend the range of________?

Ainduction instrument

Bmoving coil instrument

Cany of the above

Delectrostatic instrument

Correct answer

A. induction instrument

Explanation

The correct answer is induction instrument.

102Electrical EngineeringMedium

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at________?

A90°

B0°

C120°

D60°

Correct answer

C. 120°

Explanation

The correct answer is 120°.

103Electrical EngineeringMedium

In a Weston frequency meter, the magnetic axes of the two fixed coils are________?

Ainclined at 120°

Bparallel

Cinclined at 60°

Dperpendicular

Correct answer

D. perpendicular

Explanation

The correct answer is perpendicular.

104Electrical EngineeringMedium

An induction meter can handle current up to________?

A10 A

B30 A

C100 A

D60 A

Correct answer

C. 100 A

Explanation

The correct answer is 100 A.

105Electrical EngineeringMedium

Damping of the Ballistic galvanometer is made small to________?

Aget minimum overshoot

Bmake the system critically damped

Cmake the system oscillatory

Dget first deflection large

Correct answer

D. get first deflection large

Explanation

The correct answer is get first deflection large.

106Electrical EngineeringMedium

In an Anderson bridge, the unknown inductance is measured in terms of________?

Aknown inductance

Bknown capacitance and resistance

Cknown resistance

Dknown inductance and resistance

Correct answer

B. known capacitance and resistance

Explanation

The correct answer is known capacitance and resistance.

107Electrical EngineeringMedium

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

Aany of the above

Bthree-phase winding

Csingle-phase winding

Dtwo-phase winding

Correct answer

D. two-phase winding

Explanation

The correct answer is two-phase winding.

108Electrical EngineeringMedium

The use of ________ instruments is merely confined within laboratories as standardizing instruments?

Anone of the above

Babsolute

Cindicating

Dintegrating

Erecording

Correct answer

B. absolute

Explanation

The correct answer is absolute.

109Electrical EngineeringMedium

To avoid the effect of stray magnetic field in A.C. bridges we can use________?

Awave filters

Bany of the above

CWagner earthing device

Dmagnetic screening

Correct answer

D. magnetic screening

Explanation

The correct answer is magnetic screening.

101Electrical EngineeringMedium

An instrument transformer is used to extend the range of________?

Ainduction instrument

Bmoving coil instrument

Cany of the above

Delectrostatic instrument

Correct answer

A. induction instrument

Explanation

The correct answer is induction instrument.

102Electrical EngineeringMedium

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at________?

A90°

B0°

C120°

D60°

Correct answer

C. 120°

Explanation

The correct answer is 120°.

103Electrical EngineeringMedium

In a Weston frequency meter, the magnetic axes of the two fixed coils are________?

Ainclined at 120°

Bparallel

Cinclined at 60°

Dperpendicular

Correct answer

D. perpendicular

Explanation

The correct answer is perpendicular.

104Electrical EngineeringMedium

An induction meter can handle current up to________?

A10 A

B30 A

C100 A

D60 A

Correct answer

C. 100 A

Explanation

The correct answer is 100 A.

105Electrical EngineeringMedium

Damping of the Ballistic galvanometer is made small to________?

Aget minimum overshoot

Bmake the system critically damped

Cmake the system oscillatory

Dget first deflection large

Correct answer

D. get first deflection large

Explanation

The correct answer is get first deflection large.

106Electrical EngineeringMedium

In an Anderson bridge, the unknown inductance is measured in terms of________?

Aknown inductance

Bknown capacitance and resistance

Cknown resistance

Dknown inductance and resistance

Correct answer

B. known capacitance and resistance

Explanation

The correct answer is known capacitance and resistance.

107Electrical EngineeringMedium

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

Aany of the above

Bthree-phase winding

Csingle-phase winding

Dtwo-phase winding

Correct answer

D. two-phase winding

Explanation

The correct answer is two-phase winding.

108Electrical EngineeringMedium

The use of ________ instruments is merely confined within laboratories as standardizing instruments?

Anone of the above

Babsolute

Cindicating

Dintegrating

Erecording

Correct answer

B. absolute

Explanation

The correct answer is absolute.

109Electrical EngineeringMedium

To avoid the effect of stray magnetic field in A.C. bridges we can use________?

Awave filters

Bany of the above

CWagner earthing device

Dmagnetic screening

Correct answer

D. magnetic screening

Explanation

The correct answer is magnetic screening.