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Electrical Engineering Objective Questions { Electrical And Electronic Measurement }



78. The instrument whose deflection is given dM is known as by the expression 0a12dO
A. electrodynamic type
B. repulsion type
C. electrostatic type
D. attraction type
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79. The instrument whose deflection is given, dL by the expression &tit ? is known as d0
A. electrcidynamic type
B. moving iron type
C. electrostatic type
D. induction type
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80. The deflection expression OaV` ?d0 applies to the
A. moving iron type instrument
B. electrodynamic type instrument
C. electrostatic type instrument
D. induction type instrument
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81. Which of the following instruments consumes maximum power during measurement?
A. induction instrument
B. hot wire instrument
C. thermocouple instrument
D. electrodynamometer instrument
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82. Instrument used for dc measurement alone is
A. moving iron type
B. permanent magnet type
C. electrodynamic type
D. induction type
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83. Instrument used for ac measurement alone is
A. permanent magnet type
B. hot wire 4ype
C. electrostatic type
D. induction type
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84. Which of the following instruments will have the same calibration on both ac and dc?
A. electrodynamometer type
B. moving iron type
C. moving coil type
D. induction type
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