Govt Exams Mock Test FREE | Online Quiz Competition

Q1. An n- channel JFET has \(V_p = -6 \:v\), and \(g_m = 0.25 \: mA/V\). What will be the value of \(I_{DSS}\) for an applied gate to source voltage \(V_{GS} = - 3 V\) ?

\(2 \:mA\)

\(1.5 \:mA\)

\(2.5 \:mA\)

\(3 \:mA\)

Q2. While using a BJT as an amplifier, the collector and emitter terminals are interchanged by mistake. Assuming that the amplifier is a common emitter amplifier and the biasing is suitably adjusted, the interchange of terminals will result in,

Zero gain

Reduced gain

infinite gain

No change in gain

Q3. A silicon transistor is biased with base resistor method. If \(\beta = 100, \:V_{BE} =0.7 V,\) zero signal collector current \(I_C = 2\: mA\) and\( V_{CC} = 10V\) , what is the value of the base resistor\( R_B\)?

\(105 k\Omega\)

\(530 k\Omega\)

\(465 k\Omega\)

\(315 k\Omega\)

Q4. In voltage divider bias, \(V_{CC} = 25\: V;\: R_1 = 10\: k\Omega;\: R_2 = 3.3 \: k\Omega; \:R_C = 2 \: k\Omega;\) and \(R_E =1\: k\Omega\). What is the collector current?

6.2 mA

5.5 mA

4.5 mA

3.6 mA

Q5. Which of the following is not necessarily the advantage of a push pull amplifier?

It gives more output

There is no effect of ripple of the power supply

It consumes least power

It removes odd as well as even harmonics

Q6. For a transistor connected in common base connection, collector current is 0.95 mA and base current is 0.05 mA. Find the value of \(\alpha\):

1.00

0.5

0.95

0.05

Q7. How many op-amp will ne required to implement this equation?

\(V_o =-\big [\frac{R_f}{R_1}V_1 +\frac{R_f}{R_2}V_2 + \frac{R_f}{R_3}V_3 \big ]\)

2

3

4

1

Q8. If \(\beta = 50\) , \(I_{CO} = 4 \: \mu A\) and \(I_B = 80\: \mu A\) for a transistor, then the value of \(I_C\) will be

\(3.1 \:mA\)

\(4.201 \:mA\)

\(5.4 \:mA\)

\(6.3 \:mA\)

Q9. Guard driving reduces the

CMRR of an Intrumentation Amplifier

Leakage current in the shielded cable

Voltage gain of the first stage

Common-mode input voltage

Q10. If the \(f_T\) of a transistor use in a certain amplifier is 75 MHz and the bandwidth is 10 MHz, the voltage gain must be

750

7.5

10

1

Quiz

Year 2024

October
Week # 3 Quiz 3

Q1. An n- channel JFET has \(V_p = -6 \:v\), and \(g_m = 0.25 \: mA/V\). What will be the value of \(I_{DSS}\) for an applied gate to source voltage \(V_{GS} = - 3 V\) ?

Q2. While using a BJT as an amplifier, the collector and emitter terminals are interchanged by mistake. Assuming that the amplifier is a common emitter amplifier and the biasing is suitably adjusted, the interchange of terminals will result in,

Q3. A silicon transistor is biased with base resistor method. If \(\beta = 100, \:V_{BE} =0.7 V,\) zero signal collector current \(I_C = 2\: mA\) and\( V_{CC} = 10V\) , what is the value of the base resistor\( R_B\)?

Q4. In voltage divider bias, \(V_{CC} = 25\: V;\: R_1 = 10\: k\Omega;\: R_2 = 3.3 \: k\Omega; \:R_C = 2 \: k\Omega;\) and \(R_E =1\: k\Omega\). What is the collector current?

Q5. Which of the following is not necessarily the advantage of a push pull amplifier?

Q6. For a transistor connected in common base connection, collector current is 0.95 mA and base current is 0.05 mA. Find the value of \(\alpha\):

Q7. How many op-amp will ne required to implement this equation?

\(V_o =-\big [\frac{R_f}{R_1}V_1 +\frac{R_f}{R_2}V_2 + \frac{R_f}{R_3}V_3 \big ]\)

Q8. If \(\beta = 50\) , \(I_{CO} = 4 \: \mu A\) and \(I_B = 80\: \mu A\) for a transistor, then the value of \(I_C\) will be

Q9. Guard driving reduces the

Q10. If the \(f_T\) of a transistor use in a certain amplifier is 75 MHz and the bandwidth is 10 MHz, the voltage gain must be

Quiz

Year 2024

September Week # 4 Expire on 21 Oct 2024

October Week # 1 Expire on 31 Oct 2024

October Week # 2 Expire on 07 Nov 2024

October Week # 3 Expire on 14 Nov 2024

October Week # 3 Quiz 3

Q1. An n- channel JFET has \(V_p = -6 \:v\), and \(g_m = 0.25 \: mA/V\). What will be the value of \(I_{DSS}\) for an applied gate to source voltage \(V_{GS} = - 3 V\) ?

Q2. While using a BJT as an amplifier, the collector and emitter terminals are interchanged by mistake. Assuming that the amplifier is a common emitter amplifier and the biasing is suitably adjusted, the interchange of terminals will result in,

Q3. A silicon transistor is biased with base resistor method. If \(\beta = 100, \:V_{BE} =0.7 V,\) zero signal collector current \(I_C = 2\: mA\) and\( V_{CC} = 10V\) , what is the value of the base resistor\( R_B\)?

Q4. In voltage divider bias, \(V_{CC} = 25\: V;\: R_1 = 10\: k\Omega;\: R_2 = 3.3 \: k\Omega; \:R_C = 2 \: k\Omega;\) and \(R_E =1\: k\Omega\). What is the collector current?

Q5. Which of the following is not necessarily the advantage of a push pull amplifier?

Q6. For a transistor connected in common base connection, collector current is 0.95 mA and base current is 0.05 mA. Find the value of \(\alpha\):

Q7. How many op-amp will ne required to implement this equation?\(V_o =-\big [\frac{R_f}{R_1}V_1 +\frac{R_f}{R_2}V_2 + \frac{R_f}{R_3}V_3 \big ]\)

Q8. If \(\beta = 50\) , \(I_{CO} = 4 \: \mu A\) and \(I_B = 80\: \mu A\) for a transistor, then the value of \(I_C\) will be

Q9. Guard driving reduces the

Q10. If the \(f_T\) of a transistor use in a certain amplifier is 75 MHz and the bandwidth is 10 MHz, the voltage gain must be

Record & Track Your Performance

October
Week # 3 Quiz 3

Q7. How many op-amp will ne required to implement this equation?

\(V_o =-\big [\frac{R_f}{R_1}V_1 +\frac{R_f}{R_2}V_2 + \frac{R_f}{R_3}V_3 \big ]\)