Govt Exams Mock Test FREE | Online Quiz Competition

Q1. In case of BJT amplifier, bias stability is achieved by,

Keeping the base current constant

Changing the base current to keep \(V_{CE}\) constant

Keeping the temperature constant

Keeping the temperature and base current constant

Q2. Class AB amplifier is often used in power(large signal) amplifiers in order to

get maximum efficiency

remove even harmonics

overcome a cross-over distortion

reduce collector dissipation

Q3. The resistance of a reverse biased ideal diode is

Zero

Infinity

Low

Negative

Q4. The bipolar transistors have

Low input resistance compared to FET

High input resistance compared to FET

Zero input resistance

Infinity Resistance

Q5. If '\(\alpha\)' is the forward current gain and '\(\beta \)' is the current gain, then in BJT,__________.

\(\alpha = \frac{\beta}{\beta \:-\: 1} \)

\(\beta = \frac{\alpha}{\alpha \:-\:1 } \)

\(\alpha = \frac{\beta}{1 \:-\: \beta} \)

\(\beta = \frac{\alpha}{1 \:+\: \alpha} \)

Q6. The minimized 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. An eight stage ripple counter uses a flip-flop with propagation delay of 75 nanoseconds. The pulse width of the strobe is 50 ns. The frequency of the input signal which can be used for proper operation of the counter is approximately

1.5 MHz

500 MHz.

2 MHz.

4 MHz

Q8. \(X = 01110\) and \(Y = 11001\) are two 5-bit binary numbers represented in two’s complement format. The sum of \(X\) and \(Y\) represented in two’s complement format using 6 bits is:

\(001000\)

\(000111\)

\(100111\)

\(101001\)

Q9. What are the minimum number of 2-to-1 multiplexers required to generate a 2-input AND gate and a 2-input Ex-OR gate?

1 and 2

1 and 3

1 and 1

2 and 2

Q10. The binary number 110001.101 is equivalent to decimal number

59.265

44.32

49.625

61.5

Quiz

Year 2025

November
Week # 3 Quiz 4

Q1. In case of BJT amplifier, bias stability is achieved by,

Q2. Class AB amplifier is often used in power(large signal) amplifiers in order to

Q3. The resistance of a reverse biased ideal diode is

Q4. The bipolar transistors have

Q5. If '\(\alpha\)' is the forward current gain and '\(\beta \)' is the current gain, then in BJT,__________.

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

Q7. An eight stage ripple counter uses a flip-flop with propagation delay of 75 nanoseconds. The pulse width of the strobe is 50 ns. The frequency of the input signal which can be used for proper operation of the counter is approximately

Q8. \(X = 01110\) and \(Y = 11001\) are two 5-bit binary numbers represented in two’s complement format. The sum of \(X\) and \(Y\) represented in two’s complement format using 6 bits is:

Q9. What are the minimum number of 2-to-1 multiplexers required to generate a 2-input AND gate and a 2-input Ex-OR gate?

Q10. The binary number 110001.101 is equivalent to decimal number

Quiz

Year 2025

January Week # 2 Expire on 07 Feb 2025

January Week # 3 Expire on 14 Feb 2025

January Week # 4 Expire on 21 Feb 2025

February Week # 1 Expire on 28 Feb 2025

November Week # 3 Quiz 4

Q1. In case of BJT amplifier, bias stability is achieved by,

Q2. Class AB amplifier is often used in power(large signal) amplifiers in order to

Q3. The resistance of a reverse biased ideal diode is

Q4. The bipolar transistors have

Q5. If '\(\alpha\)' is the forward current gain and '\(\beta \)' is the current gain, then in BJT,__________.

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

Q7. An eight stage ripple counter uses a flip-flop with propagation delay of 75 nanoseconds. The pulse width of the strobe is 50 ns. The frequency of the input signal which can be used for proper operation of the counter is approximately

Q8. \(X = 01110\) and \(Y = 11001\) are two 5-bit binary numbers represented in two’s complement format. The sum of \(X\) and \(Y\) represented in two’s complement format using 6 bits is:

Q9. What are the minimum number of 2-to-1 multiplexers required to generate a 2-input AND gate and a 2-input Ex-OR gate?

Q10. The binary number 110001.101 is equivalent to decimal number

Record & Track Your Performance

November
Week # 3 Quiz 4