A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Material And Components }

330.  The signal-input impedance of a silicon depletion-type FET is
A. very low
B. about 1 kilohm
C. about 100 kilohms
D. about 10 megoluns
Discuss in Forum

331.  The MOS transistor
A. conducts with a vary low gate voltage below the threshold voltage
B. has a high gate current only conducts with gate voltage above the threshold voltage
C. has only one p-n junction
Discuss in Forum

332. The signal input impedance of a silicon MOS transistor is
A. below 1 megohm
B. over 1012 ohms
C. depend on the reverse resistance of its p-n junctions
D. between 1 and 10 megohms
Discuss in Forum

333. A semiconductor junction rectifier
A. is primarily used to rectify power supplies
B. has a high thermal resistance
C. is used in electronic switching circuits
D. is a device which joints two rectifier circuits together
Discuss in Forum

334. A zener diode
A. has a high voltage characteristic
B. has a sharp breakdown at low reverse voltage
C. is useful as controlled rectifier
D. has a negative resistance
Discuss in Forum

335.  In a tunnel diode, negative resistance means that the diode current
A. flows only when the diode is reverse biased
B. flows with no applied voltage
C. decrease as the bias voltage increases
D. increased an thebias voltage increases
Discuss in Forum

336. Tunneling occurs in the tunnel diode
A. only in the reverse direction
B. only when the forward voltage is high
C. when the bias is zero
D. in the forward direction at a very low voltage
Discuss in Forum

Page 48 of 59

« 46 47  48  4950 »