Govt Exams Mock Test FREE | Online Quiz Competition

Q1. An amplifier using an Op amp with slew rate SR=1 V/μs has a gain of 40db. If this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

795mV

395mV

79.5 mV

39.5mV

Q2. An amplifier without feedback has a voltage gain of 100, input resistance of \(10\:K\Omega\) & Output resistance of \(3\:K\Omega\). The input resistance and output resistance of the voltage-series negative feedback amplifier using the above amplifier with a feedback factor of 0.6 is

\(\frac{10}{61}\: K\Omega\) and \(183\: K\Omega\)

\(\frac{10}{61}\: K\Omega\) and \(\frac{3}{61}\: K\Omega\)

\(0.6\: K\Omega\) and \(\frac{3}{6}\: K\Omega\)

\(610\: K\Omega\) and \(\frac{3}{61}\: K\Omega\)

Q3. The ratio of mobility to the diffusion coefficient in a semiconductor has the units.

\(V^{-1}\)

\(cm\:V^{-1}\)

\(V\:cm^{-1}\)

\(V\:s\)

Q4. A differential amplifier has a differential gain of 20,000. CMRR=80 dB. The common mode gain is

2

1

0.5

0

Q5. Introducing a resistor in the emitter of a common emitter amplifier stabilizes the dc operating point against variations in

Only temperature

Only the β of the transistor

Both temperature and β

None of the above

Q6. Which represents the Transport Factor of BJT?

The ratio of the collector current and the emitter current

The ratio of the collector current and the Base current

The ratio of the emitter current and the Base current

The ratio of the collector current and the load current

Q7. In the diode V-I characteristics, the resistance of the circuit is _____________ if a slope is drawn between the voltages 100V to 200V and the corresponding current is 5A and 20A.

\(10\:\Omega\)

\(20\:\Omega\)

\(6.6\:\Omega\)

\(0.15\:\Omega\)

Q8. The early effect in a bipolar junction transistor is caused by

fast turn-on

fast turn-off

large collector-base reverse bias

large emitter-base forward bias

Q9. Based on the operation of op amp and diodes, the below circuit is called as ________.

Positive clipper circuit

Clamper circuit

Negative clipper circuit

V to I converter circuit

Q10. Determine the DC current gain \(\beta_{dc}\) for the transistor where \(I_B = \:50\:\mu A\) and \(I_C = \:3.65\:mA.\)

83

73

63

93

Quiz

Year 2025

February
Week # 3 Quiz 3

Q1. An amplifier using an Op amp with slew rate SR=1 V/μs has a gain of 40db. If this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

Q2. An amplifier without feedback has a voltage gain of 100, input resistance of \(10\:K\Omega\) & Output resistance of \(3\:K\Omega\). The input resistance and output resistance of the voltage-series negative feedback amplifier using the above amplifier with a feedback factor of 0.6 is

Q3. The ratio of mobility to the diffusion coefficient in a semiconductor has the units.

Q4. A differential amplifier has a differential gain of 20,000. CMRR=80 dB. The common mode gain is

Q5. Introducing a resistor in the emitter of a common emitter amplifier stabilizes the dc operating point against variations in

Q6. Which represents the Transport Factor of BJT?

Q7. In the diode V-I characteristics, the resistance of the circuit is _____________ if a slope is drawn between the voltages 100V to 200V and the corresponding current is 5A and 20A.

Q8. The early effect in a bipolar junction transistor is caused by

Q9. Based on the operation of op amp and diodes, the below circuit is called as ________.

Q10. Determine the DC current gain \(\beta_{dc}\) for the transistor where \(I_B = \:50\:\mu A\) and \(I_C = \:3.65\:mA.\)

Quiz

Year 2025

February Week # 1 Expire on 28 Feb 2025

February Week # 2 Expire on 07 Mar 2025

February Week # 3 Expire on 14 Mar 2025

February Week # 4 Expire on 21 Mar 2025

February Week # 3 Quiz 3

Q1. An amplifier using an Op amp with slew rate SR=1 V/μs has a gain of 40db. If this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

Q2. An amplifier without feedback has a voltage gain of 100, input resistance of \(10\:K\Omega\) & Output resistance of \(3\:K\Omega\). The input resistance and output resistance of the voltage-series negative feedback amplifier using the above amplifier with a feedback factor of 0.6 is

Q3. The ratio of mobility to the diffusion coefficient in a semiconductor has the units.

Q4. A differential amplifier has a differential gain of 20,000. CMRR=80 dB. The common mode gain is

Q5. Introducing a resistor in the emitter of a common emitter amplifier stabilizes the dc operating point against variations in

Q6. Which represents the Transport Factor of BJT?

Q7. In the diode V-I characteristics, the resistance of the circuit is _____________ if a slope is drawn between the voltages 100V to 200V and the corresponding current is 5A and 20A.

Q8. The early effect in a bipolar junction transistor is caused by

Q9. Based on the operation of op amp and diodes, the below circuit is called as ________.

Q10. Determine the DC current gain \(\beta_{dc}\) for the transistor where \(I_B = \:50\:\mu A\) and \(I_C = \:3.65\:mA.\)

Record & Track Your Performance

February
Week # 3 Quiz 3