A Zener voltage regulator will cease to act as a voltage regulator if Zener current becomes ___________
Select an option to see the answer and solution.
Electrical Engineering · all questionsRegulated DC Power Supply
Regulated DC Power Supply
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
37
Questions
1/2
Page
Pick an option on a question to see the right answer and solution.
If the load resistance decreases in a Zener regulator, then Zener current ___________
Select an option to see the answer and solution.
A Zener regulator ___________ in the power supply
Select an option to see the answer and solution.
Zener diode are generally made of ___________
Select an option to see the answer and solution.
In an unregulated power supply, if load current increases, the output voltage ___________
Select an option to see the answer and solution.
If the load current drawn by unregulated power supply increases, the d.c. output voltage ___________
Select an option to see the answer and solution.
A 30 V Zener will have depletion layer width ___________ that of 10 V Zener
Select an option to see the answer and solution.
A Zener voltage regulator is used for ___________ load currents
Select an option to see the answer and solution.
A Zener diode that has very narrow depletion layer will breakdown by mechanism
Select an option to see the answer and solution.
In a Zener voltage regulator, the changes in load current produce changes in ___________
Select an option to see the answer and solution.
Two similar 15 V Zeners are connected in series. What is the regulated output voltage?
Select an option to see the answer and solution.
An ideal regulated power supply is one which has voltage regulation of ___________
Select an option to see the answer and solution.
If the input a.c. voltage to regulated or ordinary power supply increases by 5% what will be the approximate change in d.c. output voltage?
Select an option to see the answer and solution.
The load voltage is approximately constant when a Zener diode is ___________
Select an option to see the answer and solution.
A power supply has a voltage regulation of 1%. If the no-load voltage is 20 V, what is the full-load voltage?
Select an option to see the answer and solution.
In a regulated power supply, two similar 15 V zeners are connected in series. The input voltage is 45 V d.c. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance?
Select an option to see the answer and solution.
As the junction temperature increases, the voltage breakdown point for Zener mechanism ___________
Select an option to see the answer and solution.
As the junction temperature increases, the voltage breakdown point for avalanche mechanism ___________
Select an option to see the answer and solution.
For increasing the voltage rating, zeners are connected in ___________
Select an option to see the answer and solution.
When load current is zero, the Zener current will be
Select an option to see the answer and solution.