1)A moving coil instrument gives a full scale deflection of 30mA, when the potential difference of 60 mV is applied. To measure 500V, on the same scale ________________ resistance to be added in series to the circuit. (a) 6.66 kΩ (b) 16.66 k Ω (c) 12.5 k Ω (d) 24.66 k Ω

1)A moving coil instrument gives a full scale deflection of 30mA, when the potential difference of 60 mV is applied. To measure 500V, on the same scale ________________ resistance to be added in series to the circuit. (a) 6.66 kΩ (b) 16.66 k Ω (c) 12.5 k Ω (d) 24.66 k Ω

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.17MCQ

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Question

1)A moving coil instrument gives a full scale deflection of 30mA, when the potential difference of 60
mV is applied. To measure 500V, on the same scale ________________ resistance to be added in
series to the circuit.
(a) 6.66 kΩ (b) 16.66 k Ω (c) 12.5 k Ω (d) 24.66 k Ω

2)An electrical equipment in an office takes a current of 20 A from a 230V supply. The equipment is
used for 30 hours per week. 1 kWh energy costs 15 Baiza. The cost per week of electricity is
________________ Baiza.
(a) 3070 (b) 970 (c) 1070 (d) 2070

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