Three D.C. voltmeters are connected in series across a 120 V D.C. supply. The voltmeters are specified as follows: Voltmeter A: 100 V, 2.5 mA Voltmeter B: 100 V, 500 22/V Voltmeter C: 10 mA, 30000 92 The voltages read by the meters A, B and C are respectively. (a) 30, 40 and 50 V (b) 40, 50 and 30 V (c) 50, 40 and 30 V (d) 40, 30 and 50 V

Three D.C. voltmeters are connected in series across a 120 V D.C. supply. The voltmeters are specified as follows: Voltmeter A: 100 V, 2.5 mA Voltmeter B: 100 V, 500 22/V Voltmeter C: 10 mA, 30000 92 The voltages read by the meters A, B and C are respectively. (a) 30, 40 and 50 V (b) 40, 50 and 30 V (c) 50, 40 and 30 V (d) 40, 30 and 50 V

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter11: Thermostats, Pressure Switches, And Other Electric Control Devices

Section: Chapter Questions

Problem 6RQ: True or False: A bimetal is a combination of two pieces of metal that are welded together, each with...

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

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