Question: A Zener diode______________?

• 1. Is a battery
• 2. Acts like a battery in the breakdown region
• 3. Has a barrier potential of 1 V
• 4. Is forward biased

Question: A 30 V Zener will have depletion layer width_______________ that of 10 V Zener?

• 1. More than
• 2. Less than
• 3. Equal to
• 4. None of the above

Question: What is true about the breakdown voltage in a Zener diode ?

• 1. It decreases when load current increases
• 2. It destroys the diode
• 3. It equals current times the resistance
• 4. It is approximately constant

Question: A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ?

• 1. 1 O
• 2. 1 O
• 3. 100 O
• 4. 10 O

Question: 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 ?

• 1. 09%
• 2. 87 %
• 3. 72 %
• 4. None of the above

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

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

Question: A Zener voltage regulator is used for ____________ load currents?

• 1. High
• 2. Very high
• 3. Moderate
• 4. Small

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

• 1. Less than load current
• 2. Zero
• 3. More than load current
• 4. None of the above

Question: Another name for Zener diode is ______________diode?

• 1. Breakdown
• 2. Voltage
• 3. Power
• 4. Current

Question: For increasing the voltage rating, zeners are connected in_____________?

• 1. Parallel
• 2. Series-parallel
• 3. Series
• 4. None of the above