Numerical - Power taken by load, given dynamometer type wattmeter power, load voltage & internal resistance

Q.  A dynamometer type wattmeter reads 200W when its voltage coil is connected across the load whose voltage is 150 V. if the voltage coil has internal resistance of 1800 ohm, then the power taken by the load will be
- Published on 10 Nov 15

a. 163.8 W
b. 171.7 W
c. 178.9 W
d. 187.5 W

ANSWER: 187.5 W

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