Govt Exams Mock Test FREE | Online Quiz Competition

Q1. Magnetic amplifiers have the drawback(s) of

Limited frequency response

Much lower input impedance and finite power gain

Both (A) & (B)

None of the above

Q2. Op-amp used as a tuned amplifier has the tuned circuit connected

across input

across series impedance at the input

across feed-back impedance \(Z_f\)

across output

Q3. Which of the following statements is FALSE about LED lamps?

An LED is doped with silicon and germanium like all semiconductor devices.

An LED works in forward biased condition only.

An LED is a semiconductor device.

The cathode region of an LED would have a slight bent in the structure in comparison with the anode portion.

Q4. The transistor configuration which provides highest output impedance is:

Common collector

Common emitter

Common base

All configurations

Q5. The doping level of the zener diode is _________that of a PN junction diode.

more than

0.5 times

0.9 times

the same as

Q6. The minimised expression for the given K-map is

\((\bar A + \bar B) \cdot ( \bar A + B) \cdot ( A + B) \)

\(\bar A \cdot ( A + B)\)

\(\bar A \cdot B\)

\(\bar A + B\)

Q7. The full scale of a DAC is 10mA. If resolution is to be less than 40 μA, then required bits are

12

8

9

10

Q8. Dual slope ADC has \(R = 1.8\: K\Omega\) and \(C = 0.66 \:nF\) has charging and discharge times for some voltage is \(11\: ns\) and \(5\: ns\) respectively. The reference Voltage is \(3.2 \:V\). What is the peak voltage reached by a triangular wave during charging?

7.69 mV

16.24 mV

11.87 mV

13.46 mV

Q9. The number of 1 in 8-bit representation of 106 in 2’s complement form is \(y\) and that in 1's complement form is \(x\). What is the value of \(x:y\)?

\(1:3\)

\(3:2\)

\(4:4\)

\(2:4\)

Q10. The hexadecimal number B6C7 is equivalent to decimal number

49761

47691

46791

49761

Quiz

Year 2024

May
Week # 3 Quiz 4

Q1. Magnetic amplifiers have the drawback(s) of

Q2. Op-amp used as a tuned amplifier has the tuned circuit connected

Q3. Which of the following statements is FALSE about LED lamps?

Q4. The transistor configuration which provides highest output impedance is:

Q5. The doping level of the zener diode is _________that of a PN junction diode.

Q6. The minimised expression for the given K-map is

Q7. The full scale of a DAC is 10mA. If resolution is to be less than 40 μA, then required bits are

Q8. Dual slope ADC has \(R = 1.8\: K\Omega\) and \(C = 0.66 \:nF\) has charging and discharge times for some voltage is \(11\: ns\) and \(5\: ns\) respectively. The reference Voltage is \(3.2 \:V\). What is the peak voltage reached by a triangular wave during charging?

Q9. The number of 1 in 8-bit representation of 106 in 2’s complement form is \(y\) and that in 1's complement form is \(x\). What is the value of \(x:y\)?

Q10. The hexadecimal number B6C7 is equivalent to decimal number

Quiz

Year 2024

July Week # 1 Expire on 31 Jul 2024

July Week # 2 Expire on 07 Aug 2024

July Week # 3 Expire on 14 Aug 2024

July Week # 4 Expire on 21 Aug 2024

May Week # 3 Quiz 4

Q1. Magnetic amplifiers have the drawback(s) of

Q2. Op-amp used as a tuned amplifier has the tuned circuit connected

Q3. Which of the following statements is FALSE about LED lamps?

Q4. The transistor configuration which provides highest output impedance is:

Q5. The doping level of the zener diode is _________that of a PN junction diode.

Q6. The minimised expression for the given K-map is

Q7. The full scale of a DAC is 10mA. If resolution is to be less than 40 μA, then required bits are

Q8. Dual slope ADC has \(R = 1.8\: K\Omega\) and \(C = 0.66 \:nF\) has charging and discharge times for some voltage is \(11\: ns\) and \(5\: ns\) respectively. The reference Voltage is \(3.2 \:V\). What is the peak voltage reached by a triangular wave during charging?

Q9. The number of 1 in 8-bit representation of 106 in 2’s complement form is \(y\) and that in 1's complement form is \(x\). What is the value of \(x:y\)?

Q10. The hexadecimal number B6C7 is equivalent to decimal number

Record & Track Your Performance

May
Week # 3 Quiz 4