. A single stage transistor amplifier contains ……………. and associated circuitry

A) Two transistors B) One transistor C) Three transistor D) None of the above

When an a.c. signal is applied to an amplifier, ,the operating point moves along …………….

A) d.c. load line B) a.c. load line C) both d.c. and a.c. load lines D) none of the above

In the zero signal conditions, a transistor sees ……………….. load

d.c. a.c. both d.c. and a.c. none of the above

The input capacitor in an amplifier is the ……………….. capacitor

A)Coupling B) Bypass C) Leakage D) None of the above

The purpose of capacitors in a transistor amplifier is to ………………

A) Protect the transistor B) Cool the transistor C) Couple or bypass a.c. component D) Provide biasing

In practice, the voltage gain of an amplifier is expressed ……………..

A) As volts B) As a number C) In db D) None of the above

In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ………….

A) Short B) Open C) Partially open D) None of the above

The purpose of d.c. conditions in a transistor is to …………..

A) Reverse bias the emitter B) Forward bias the collector C) Set up operating point D) None of the above

An amplifier has a power gain of 100. Its db gain is ……………

A) 10 db B) 20 db C) 40 db D) None of the above

The purpose of emitter capacitor (i.e. capacitor across RE) is to ……….

A) Avoid voltage gain drop B) Forward bias the emitter C) Reduce noise in the amplifier D) None of the above

Amplifier which provides full swing digital signal is termed as

A) swing amplifier B) sense amplifier C) rest amplifier D) full amplifier

Disk and tapes are type of

A) serial memory B) combinational memory C) state memory D) flip flop

DC operating point of transistor is also known as

quiescent point load point amplification point junction point

Collector feedback provides good stability using negative feedback from

A) emitter to ground B) collector to base C) emitter to base D) base to ground

Main disadvantage of emitter bias is that for biasing it requires

A) one supply voltage B) two supply voltages C) no supply voltage D) three supply voltages

Lower load line limit of BJT transistor is

A) IC(saturation) and VCE(cutoff) B) IC(saturation) and VCE(saturation) C) IC=0 and VCE(cutoff) D) IC(saturation) and VCE=0

A transistor must be properly biased in order to operate as an

A)modulator B) amplifier C) attenuator D) transmitter

Which of the following is DC current gain 'Β' dependent?

A) base bias B) emitter bias C) collector bias D) junction bias

Voltage divider bias is stable and thus required

A) one supply voltage B) two supply voltages C) no supply voltage D) three supply voltages

If in BJT voltage divider, if emitter resistance decreases, collector current

A) will increase B) will decrease C) become zero D) become infinite

What are the two methods of expressing the Sensitivity of a meter?

a. Ω/V b. full scale deflection c. full scale current d. a and c only