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

• 1. Zener current
• 2. Zener voltage
• 3. Zener voltage as well as Zener current
• 4. None of the above

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

• 1. Remains the same
• 2. Is increased
• 3. Is decreased
• 4. None of the above

Question: Zener diode are generally made of _____________?

• 1. Germanium
• 2. Silicon
• 3. Carbon
• 4. None of the above

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

• 1. Remains the same
• 2. Decrease
• 3. Increases
• 4. None of the above

Question: A Zener diode is used as a _____________voltage regulating device?

• 1. Shunt
• 2. Series
• 3. Series-shunt
• 4. None of the above

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

• 1. Avalanche mechanism
• 2. Zener mechanism
• 3. Both Zener and avalanche mechanism
• 4. None of the above

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

• 1. Is increased
• 2. Is decreased
• 3. Remains the same
• 4. None of the above

Question: A Zener diode utilises_____________characteristic for voltage regulation?

• 1. Forward
• 2. Reverse
• 3. Both forward and reverse
• 4. None of the above

Question: Commercial power supplies have voltage regulation ______________?

• 1. of 10%
• 2. of 15%
• 3. of 25%
• 4. within 1%

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

• 1. Increases
• 2. Decreases
• 3. Remains the same
• 4. None of the above