Transistors + diodes

Question 1

Silicon controlled rectifier is switched off by

Answer 1

Removing the source potential

Question 2

Zener diode has which of the following characteristics

Constant voltage , variable current
Constant current, variable voltage

Answer 2

Constant voltage , variable current

Question 3

When a hole diffuses from the p region to the n region it

Lowers the potential barrier
Raises the potential barrier

Answer 3

Raises the potential barrier

Question 4

Current gain in a common emitter amplifier is given by the symbol

A
B
C

Answer 4

B

Question 5

Resistance measured using an AVO between collector and emitter is

Not the same
Same both ways

Answer 5

Same both ways

Transistor two diodes back to back

Question 6

MOSFET n type channel ?

MOSFET p type channel?

Answer 6

N type

P type

Question 7

Pnp when there is no current at the base?

Answer 7

Flow occurs