(b) A wattmeter is designed to give a full scale deflection with a current coil (i.) and voltage coil current (ip) of 1.5 A and 1.0 mA, respectively. The fixed coil resistance (R.) and moving coil resistance (Rm) are 0.7 N and 150 k 2, respectively. Determine the following: (i) The maximum power which can be measured by the wattmeter. (ii) The voltage of the moving coil circuit to enable the full scale deflection for a current of 2.0 A when power dissipates in a load. The phase angle is 55°. (c) Blondel's theorem is used to specify the number of wattmeters for power measurement in a system of electrical conductors. Discuss the three (3) arrangements of a wattmeter method.

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(b) A wattmeter is designed to give a full scale deflection with a current coil (i.) and
voltage coil current (ip) of 1.5 A and 1.0 mA, respectively. The fixed coil resistance
(R.) and moving coil resistance (Rm) are 0.7 N and 150 k Q, respectively. Determine
the following:
(i)
The maximum power which can be measured by the wattmeter.
(ii) The voltage of the moving coil circuit to enable the full scale deflection for a
current of 2.0 A when power dissipates in a load. The phase angle is 55°.
(c) Blondel's theorem is used to specify the number of wattmeters for power
measurement in a system of electrical conductors. Discuss the three (3) arrangements
of a wattmeter method.
Transcribed Image Text:(b) A wattmeter is designed to give a full scale deflection with a current coil (i.) and voltage coil current (ip) of 1.5 A and 1.0 mA, respectively. The fixed coil resistance (R.) and moving coil resistance (Rm) are 0.7 N and 150 k Q, respectively. Determine the following: (i) The maximum power which can be measured by the wattmeter. (ii) The voltage of the moving coil circuit to enable the full scale deflection for a current of 2.0 A when power dissipates in a load. The phase angle is 55°. (c) Blondel's theorem is used to specify the number of wattmeters for power measurement in a system of electrical conductors. Discuss the three (3) arrangements of a wattmeter method.
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