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Electrical Engineering Objective Questions { Electrical And Electronic Measurement }



22. Electrostatic voltmeters
A. are not frequency limited
B. have uniform scale
C. have scale reading rms value on ac circuits
D. have scale reading peak value on ac circuits

23. If a d'Arsonval meter movement is rated at 50 ILA, and only 25 ga is passing through its coil, the deflection will be
A. 100 per cent of full scale
B. 50 per cent of full scale
C. 25 per cent of full scale
D. 10 per cent of full scale

24. The instrument whose deflection is given
A. electrodynamic type
B. repulsion type
C. electrostatic type
D. attraction type

25. The instrument whose deflection is given dL by the expression OaL`?dO is known as
A.electrodynamic type
B. moving iron type
C. electrostatic type
D. induction type

26. Which of the following instrument consumes the lowest power measurement?
A. VTVM
B. PMMC instrument
C. electrostatic instrument
D. d'Arsonval instrument by the expression Oal2 dO is known as dM

27. Instrument used for dc measurement alone is
A. moving iron type
B. permanent magnet type
C. electrodynamic type
D. induction type

28. Instrument used for ac measurement alone is
A. permanent magnet type
B. hot wire type
C. electrostatic type
D. induction type

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