In AC generator, induced emf is zero at time t = 0. The induced emf at time pi/(2omega) is ____

In AC generator, induced emf is zero at time t = 0. The induced emf at

1.	In AC generator, induced emf is zero at time t = 0. The induced emf at time pi/(2omega) is ____
Answer» `+V_m` `-V_m` ZERO `+2 V_m` SOLUTION :At time t=0 , the emf =0 , so emf obtained from EQN. `V=V_n SIN omegat` `therefore V=V_m sin (omegaxxpi/(2omega)) [ because t=pi/(2omega)]` `therefore V=V_m sin (pi/2)` `therefore V=+V_m [ because "sin" pi/2=1]`

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In AC generator, induced emf is zero at time t = 0. The induced emf at time pi/(2omega) is ____

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