25. Normal operation of the NPN-BJT requires the base voltage to be the emitter

Question

25. Normal operation of the NPN-BJT requires the base voltage to be the emitter voltage. 12 Marks a. greater than b. less than c. equal to d. 10 times 26. The three terminals of a bipolar junction transistor are called 2 Marks] a.npn b. base, emitter, collector pnp d. input, output, ground 27. An open base resistor RB in a transistor switch will result in the 12 Marks a. transistor always being ON b. transistor always being OFF c. transistor operating in the active region d. transistor being destroyed 28-The class AB BJT is typically used as a(n) amplifier 12 Marks a. radio signal b. small signal amplifier C. instrumentation d. power

Explanation / Answer

ANSWER:

(25) Answer is A, as VBE should be positive(must be greater than a threshold voltage) for normal operation of a BJT.

(26) Answer is B, as the terminals are named as base,collector and emitter.

(27) Answer is D, as the base current should be limited to avoid the BJT being destroyed.

(28) Answer is D, as it is used as audio power amplifier because of good sound quality.

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