Numerical - Calculate current required in voltage coil at full scale in d.c. circuit, given variation of inductance, spring constant, current flowing

Q.  For a dynamometer wattmeter, the variation of inductance with angular position of moving system is 0.06 mH/radian and spring constant is 10 X 10-6 N -m / radian. The current flowing in the instrument is 8 A. If the full scale deflection is 76 degree, then the current required in the voltage coil at full scale in d.c. circuit is
- Published on 14 Sep 15

a. 27.6 μA
b. 29.89 μA
c. 35.3 μA
d. 37.28 μA

ANSWER: 27.6 μA

Related Content

➨ Post your comment / Share knowledge


Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)
▲