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A generator produces an e.m.f. of e = 24...

A generator produces an e.m.f. of e = 240 sin 120 t volt, where t is in seconds. The frequency and r.m.s. voltage are

A

60 Hz and 240 V

B

19 Hz and120 V

C

19 Hz and 170 V

D

754 Hz and 170 V

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