Electrical Engineering Mcqs

RC coupling is used for_____________amplification?

• (A)  Voltage
• (B)  Current
• (C)  Power
• (D)  None of the above

Answer

Submitted By :Ali Uppal

A radio receiver has____________of amplification?

• (A)  One stage
• (B)  Two stages
• (C)  Three stages
• (D)  More than one stages

Answer

Submitted By :Ali Uppal

A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ________________________?

• (A)  RC
• (B)  RC || RE
• (C)  RC – RE
• (D)  RC + RE

Answer

Submitted By :Ali Uppal

For highest power gain, one would use _________________configuration?

• (A)  CC
• (B)  CB
• (C)  CE
• (D)  none of the above

Answer

Submitted By :Ali Uppal

In transistor amplifiers, we generally use______________ capacitors?

• (A)  Electrolytic
• (B)  Mica
• (C)  Paper
• (D)  Air

Answer

Submitted By :Ali Uppal

The value of collector load RC in a transistor amplifier is _______________the output impedance of the transistor?

• (A)  The same as
• (B)  Less than
• (C)  More than
• (D)  None of the above

Answer

Submitted By :Ali Uppal

The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?

• (A)  Transistor
• (B)  Biasing circuit
• (C)  Collector supply VCC
• (D)  None of the above

Answer

Submitted By :Ali Uppal

RC coupling is generally confined to low power applications because of____________?

• (A)  Large value of coupling capacitor
• (B)  Low efficiency
• (C)  Large number of components
• (D)  None of the above

Answer

Submitted By :Ali Uppal

An amplifier receives 0.1 W of input signal and delivers 15 W of signal power. What is the power gain in db?

• (A)  8 db
• (B)  6 db
• (C)  5 db
• (D)  4 db

Answer

Submitted By :Ali Uppal

The gain of an amplifier is expressed in db because_____________?

• (A)  It is a simple unit
• (B)  Calculations become easy
• (C)  Human ear response is logarithmic
• (D)  None of the above

Answer

Submitted By :Ali Uppal