Tunnel effect

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1.Why do we prefer silicon for transistor?

• Current amplification high

• High Resistance

• High temperature coefficient

9.In Schottky diode bands bends up

• in the direction of electric field

• In the direction of magnetic field

• in the direction of power

LIGHT EMITTING DIODE WORKS IN ________________ CONDITION.

• REVERSE BIAS

• NO BIAS

• FORWARD BIAS

• NONE OF THE ABOVE.

Schottky junction made up of

• Metal to n region

• p to n region

• metal to semiconductor

• metal to insulator

Comparing a triac & SCR

• Both are unidirectional devices

• An SCR has less time for turn off than Triac

• Both are bidirectional devices

• All of the above

A device that does not exhibit negative resistance characteristics is

• FET

• UJT

• Tunnel diode

• SCR

The ripple factor of a bridge rectifier is

• 0.482

• 0.8l2

• l.ll

• 1.21

SCOTTKY DIODE OPERATES ONLY WITH

• Majority Carriers

• Minority Carriers

The thyristor is turned -off when the anode current falls below_____

• Forward current

• Latching current

• Holding current

• Breakover current