Electrical Engineering Mcqs

The current in a Zener diode is limited by _______________?

• (A)  External resistance
• (B)  Power dissipation
• (C)  Both (A) and (B)
• (D)  None of the above

Answer

Submitted By :Ali Uppal

A certain regulator has a no-load voltage of 6 V and a full-load output of 5.82 V. What is the load regulation ?

• (A)  09%
• (B)  87 %
• (C)  72 %
• (D)  None of the above

Answer

Submitted By :Ali Uppal

A Zener diode that has very narrow depletion layer will breakdown by____________ mechanism?

• (A)  Avalanche
• (B)  Zener
• (C)  Both avalanche and Zener
• (D)  None of the above

Answer

Submitted By :Ali Uppal

A Zener voltage regulator is used for ____________ load currents?

• (A)  High
• (B)  Very high
• (C)  Moderate
• (D)  Small

Answer

Submitted By :Ali Uppal

A Zener voltage regulator will cease to act as a voltage regulator if Zener current becomes______________?

• (A)  Less than load current
• (B)  Zero
• (C)  More than load current
• (D)  None of the above

Answer

Submitted By :Ali Uppal

Another name for Zener diode is ______________diode?

• (A)  Breakdown
• (B)  Voltage
• (C)  Power
• (D)  Current

Answer

Submitted By :Ali Uppal

For increasing the voltage rating, zeners are connected in_____________?

• (A)  Parallel
• (B)  Series-parallel
• (C)  Series
• (D)  None of the above

Answer

Submitted By :Ali Uppal

In a Zener voltage regulator, the changes in load current produce changes in _________________?

• (A)  Zener current
• (B)  Zener voltage
• (C)  Zener voltage as well as Zener current
• (D)  None of the above

Answer

Submitted By :Ali Uppal

If the doping level is increased, the breakdown voltage of the Zener_______________?

• (A)  Remains the same
• (B)  Is increased
• (C)  Is decreased
• (D)  None of the above

Answer

Submitted By :Ali Uppal

Zener diode are generally made of _____________?

• (A)  Germanium
• (B)  Silicon
• (C)  Carbon
• (D)  None of the above

Answer

Submitted By :Ali Uppal