MCQ on Analog Electronics with Answers - 3

 

Multiple Choice Questions with Answers on Analog Electronics Circuits - 3

          1          In small signal model of MOSFET, input resistance r_gs is of the order of

a.       1MΩ

b.      100KΩ

c.       10MΩ

d.      10⁴MΩ

Answer: d

 

          2          In small signal model of MOSFET, feedback resistance r_gd is of the order of

a.       1MΩ

b.      10⁶MΩ

c.       10MΩ

d.      10⁴MΩ

Answer: b

 

          3          In small signal high frequency model of a JFET, feedback capacitance C_gd is of the order of

a.       5pF

b.      50pF

c.       1μF

d.      500pF

Answer: a

 

          4          In small signal high frequency model of a JFET, drain to source capacitance C_ds is of the order of

a.       1pF

b.      10pF

c.       100pF

d.      1000pF

Answer: a

 

          5          In small signal high frequency model of a JFET, gate to source capacitance C_gs is of the order of

a.       5pF

b.      50pF

c.       500pF

d.      5000pF

Answer: a

 

          6          In a Class A amplifier with sinusoidal input signal, the output current flows for

a.       full cycle

b.      half cycle

c.       more than half cycle

d.      less than half cycle

Answer: a

 

          7          In a Class B amplifier with sinusoidal input signal, the output current flows for

a.       full cycle

b.      half cycle

c.       more than half cycle

d.      less than half cycle

Answer: b

 

          8          In a Class C amplifier with sinusoidal input signal, the output current flows for

a.       full cycle

b.      half cycle

c.       more than half cycle

d.      less than half cycle

Answer: d

 

          9          In a Class AB amplifier with sinusoidal input signal, the output current flows for

a.       full cycle

b.      half cycle

c.       more than half cycle

d.      less than half cycle

Answer: c

 

        10        Frequency distortion in an amplifier is caused by

a.       nonlinear dynamic characteristic of the active device

b.      reactive elements in the circuit

c.       ripple components in the circuit

d.      high temperature of operation

Answer: b

 

        11        Nonlinear distortion in an amplifier is caused by

a.       nonlinear dynamic characteristic of the active device

b.      reactive elements in the circuit

c.       ripple components in the circuit

d.      high temperature of operation

Answer: a

        12        Parameter f_T of a transistor is approximately given by

a.       g_m/C_e

b.      g_m/2πC_e

c.       2πC_e /g_m

d.      h_fe/f_β

Answer: b

Hope this post on "MCQ on Analog Electronics with Answers-3" will help Electronics Engineering and Electrical Engineering students in preparation of technical interviews, GATE, IES etc.