Wednesday, October 2, 2013

A sine wave of voltage varies from zero to maximum of 200 V. How much is the voltage at the instant of 30 deg of the cycle ?

A sine wave of voltage varies from zero to maximum of 200 V. How much is the voltage at the instant of 30 deg of the cycle ?

A. 50 V
B. 82.8 V
C. 100 V
D. 173.2 V


Explanatory answer:

In general, Sine wave form is represented as Vm sin wt.

Vm = 200

at 30 deg,  200 sin (30) = 100 V

Ans: 100 V

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