Analog Electronics
A 3 - phase diode bridge rectifier is fed from a 400 V rms, 50 Hz, 3 phase AC source. If the load is purely resistive, then peak instantaneous output voltage is equal to

 400√ 2 V.
 400 / √ 3 V.
 400√ (2/3) V.
 400 V.

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Analog Electronics
When a transistor is connected in common emitter mode, it with have

Low input resistance as well as output resistance
Negligible input resistance and high output resistance
High input resistance and low output resistance
Medium input resistance and high output resistance

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