Why is spring control to be preferred to gravity control in an electrical measuring instrument? The coil of a moving-coil meter has a resistance of 5 Ω and gives full-scale deflection when a current of 15 mA passes through it. What modification must be made to the instrument to convert it into: (a) an ammeter reading to 15 A; (b) a voltmeter reading to 15 V?

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Q: b) (i) Define loading effect. (ii) A voltmeter is quoted as having the range of 0-20 V and an…

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Q: 本 -2V fu 2V

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Q: B) The meter constant of 5 A, 220 V, d.c. energymeter is 3275 revolutions per k Wh. Calculate the…

A: The solution is given below

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Q: The full-scale deflecting torque of a 20 A moving-iron ammeter is 6 x 10¹5 N-m. What is the rate of…

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A: The solution is given below

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Q: 1. A coil has 480 turns and flux in it changes from 0.24 m Wb to 1.2 m Wb in 0.24 second. Calculate…

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Q: The instrument that is used to measure only DC current is

A: The instrument that is used to measure only DC current is PMMC METER

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Q: Q4(a) Compare and contrast between Electric field and Magnetic field.

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Q: Explain the principles and application of electromagnetic induction.

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Q: The full-scale deflecting torque of a 20 A moving-iron ammeter is 6 × 10³ N-m. What is the rate of…

A: The given problem is from measuring instruments.  The detailed solution is given in the next step

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.