Question 170: Semiconductors and Logic Gates

Question

An unknown transistor needs to be identified as a
npn
or
pnp
type. A multimeter, with + ve and − ve terminals, is used to measure resistance between different terminals of transistor. If terminal 2 is the base of the transistor then which of the following is correct for a pnp transistor ?

Accepted Answer

+ ve terminal at 1, $$-$$ ve terminal at 2 and resistance high for pnp transistor.

Answer

+ ve termial 1,  $$-$$ve terminal 2, resistance high

Answer

+ ve termial 2,  $$-$$ve terminal 1, resistance high

Answer

+ ve termial 3,  $$-$$ve terminal 2, resistance high

Answer

+ ve termial 2,  $$-$$ve terminal 3, resistance low

Semiconductors and Logic Gates

An unknown transistor needs to be identified as a npn or pnp type. A multimeter, with + ve and − ve terminals, is used to measure resistance between different terminals of transistor. If terminal 2 is the base of the transistor then which of the following is correct for a pnp transistor ?

Choose the correct answer: