Analog Circuits Mock Test 8

10%

Question 1 of 10

1. How is the metallurgical channel thickness between the gate and the substrate related to the doping concentration of the channel?

Exponentially related to the square root of the doping concentration

Logarithmically related to the square root of the doping concentration

Directly proportional to the square root of the doping concentration

Inversely proportional to the square root of the doping concentration

Question 1 of 10

Question 2 of 10

2. Example for a self-limiting oscillator is __________

Weinbridge Oscillator

RC phase shift oscillator

Hartley oscillator

Astable multivibrator

Question 2 of 10

Question 3 of 10

3. The cut-off frequency of a JFET is ___________

logarithmically related to the transconductance of the JFET

linearly related to the transconductance of the JFET

exponentially related to the transconductance of the JFET

inversely proportional to the transconductance of the JFET

Question 3 of 10

Question 4 of 10

4. Which of these is false for a CS amplifier without a bypass capacitor compared to a CS amplifier with a bypass capacitor?

Input resistance remains same

The output is 180° out of phase with respect to the input applied

The output resistance decreases

Voltage gain magnitude decreases

Question 4 of 10

Question 5 of 10

5. In a high-frequency model of a JFET, which of these capacitances is present?

A: Gate-to-source capacitance
B: Gate-to-drain capacitance
C: Drain-to-source capacitance

A, B and C

A and C

A and B

B and C

Question 5 of 10

Question 6 of 10

6. The gain device in the colpitts oscillator act as a ___________

Band rejection filter

Band pass filter

Low pass filter

High pass filter

Question 6 of 10

Question 7 of 10

7. The frequency variation error occurred when crystal is re-powered after several hours is termed as ___________

Moore’s effect

Aging

Magnus effect

Retrace

Question 7 of 10

Question 8 of 10

8. The resistance in the equivalent circuit of crystal oscillator represents __________

Inter electrode capacitance

Compliance

Mass

Viscous factor

Question 8 of 10

Question 9 of 10

9. What will be the clapp oscillator frequency if the C₁, C₂, C₃ of clap oscillator is 1μF, 1μF, 2μF respectively and inductance is 1μH?

0.1MHz

0.4MHz

4MHz

1MHz

Question 9 of 10

Question 10 of 10

10. If C1 and C2 are the capacitance used in Colpitts oscillator the effective capacitance in the equation of frequency calculation is equal to ___________

3 (C1×C2)/(C1+C2)

(ᴨ×C1×C2)/(C1+C2)

(C1×C2)/(C1+C2)

(C1×C2)/(2ᴨ(C1+C2))

Question 10 of 10