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

What do pointers or underdamped meters do?

a. Oscillate above and below the value b. Move too fast to indicate value c. Move to the correct reading rapidly but does not overshoot d. Move slowly and will not indicate rapid variations adequately

Indicate which is not a way producing damping in meters.

a. shunt coil b. multiplier c. aluminum coil form d. air paddle

Built a computer in 1946 at the Institute of Advance Study (IAS), Princeton, USA, that uses binary numbers and stores information.

A. Vannevar Bush B. John Van Neumann C. John Atannasoff D. Clifford Berry

A electronic device design to accept data performs prescribed computational and logical operations at high speed and output the results of this operation.

A. Compiler B. Simulator C. Computer D. Digital machine

First commercial computer introduce in 1953 that uses valves.

A. IBM-1400 B. UNIVAC C. IBM-701 D. ENIAC

ENIAC was developed at

A. University of Pennsylvania B. Massachusetts Institute of Technology C. Cambridge University D. Bell Laboratories

ENIAC consist of how many vacuum tubes?

A. 1,500 tubes B. 3,575 tubes C. 13,575 tubes D. 18,000 tubes

What is a group of circuits that provides timing and signals to all operations in the computer?

A. Output unit B. Memory unit C. Control unit D. Input unit