Electrical Engineering Mcqs

As the junction temperature increases, the voltage breakdown point for avalanche mechanism______________?

• (A)  Remains the same
• (B)  Decrease
• (C)  Increases
• (D)  None of the above

Answer

Submitted By :Ali Uppal

A Zener diode is used as a _____________voltage regulating device?

• (A)  Shunt
• (B)  Series
• (C)  Series-shunt
• (D)  None of the above

Answer

Submitted By :Ali Uppal

In a 15 V Zener diode , the breakdown mechanism will occur by ______________?

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

Answer

Submitted By :Ali Uppal

As the junction temperature increases, the voltage breakdown point for Zener mechanism _______________?

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

Answer

Submitted By :Ali Uppal

A Zener diode utilises_____________characteristic for voltage regulation?

• (A)  Forward
• (B)  Reverse
• (C)  Both forward and reverse
• (D)  None of the above

Answer

Submitted By :Ali Uppal

In an unregulated power supply, if load current increases, the output voltage _____________?

• (A)  Remains the same
• (B)  Decreases
• (C)  Increases
• (D)  None of the above

Answer

Submitted By :Ali Uppal

In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?

• (A)  Increases
• (B)  Decreases
• (C)  Remains the same
• (D)  None of the above

Answer

Submitted By :Ali Uppal

Commercial power supplies have voltage regulation ______________?

• (A)  of 10%
• (B)  of 15%
• (C)  of 25%
• (D)  within 1%

Answer

Submitted By :Ali Uppal

A power supply which has voltage regulation of ____________ is unregulated power supply?

• (A)  0 %
• (B)  5 %
• (C)  10 %
• (D)  8%

Answer

Submitted By :Ali Uppal

An ideal regulated power supply is one which has voltage regulation of________________?

• (A)  0%
• (B)  5%
• (C)  10%
• (D)  1%

Answer

Submitted By :Ali Uppal