Questions
Two alternating voltage generators produce emfs of the same amplitude E0 but with a phase difference of . The resultant emf is
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Correct option is C
E1=E0sinωt; E2=E0sinωt+π/3E = E2 + E1=E0 sinωt+π/3+E0sinωt=E02sinωt+π/6 cosπ/6=3E0sin ωt+π/6
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The peak value of an alternating emf E given by is 10 V and frequency is 50 HZ. At time t = (1/600) s, the instantaneous value of emf is
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