# Rectifiers 26

26. If the a.c. input to a half-wave rectifier has an r.m.s. value of 400/2 volts, then diode PIV rating is ……..

(a) $\dpi{100} 400/ 2 V$
(b) $\dpi{100} 400 V$
(c) $\dpi{100} 400\sqrt{2} V$
(d) none of the above