Q.1.
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?
Q.2.
In an unregulated power supply, if input a.c. voltage increases, the output voltage .
Q.3.
Which of these is the best description for a Zener diode?
Q.4.
In a 15 V Zener diode , the breakdown mechanism will occur by ___________
Q.5.
Commercial power supplies have voltage regulation ___________
Q.6.
If the doping level is increased, the breakdown voltage of the Zener ___________
Q.7.
A Zener diode utilises ___________ characteristic for voltage regulation
Q.8.
In a loaded Zener regulator, which is the largest Zener current?
Q.9.
Another name for Zener diode is ___________ diode
Q.10.
The current in a Zener diode is limited by ___________
Q.11.
A power supply can deliver a maximum rated current of 0.5 A at full-load output voltage of 20 V. What is the minimum load resistance that you can connect across the supply?
Q.12.
The Zener current will be minimum when ___________
Q.13.
A Zener diode ___________
Q.14.
The rupture of covalent bonds will occur when the electric field is ___________
Q.15.
What is true about the breakdown voltage in a Zener diode?
Q.16.
A Zener diode is used as a ___________ voltage regulating device
Q.17.
A power supply which has voltage regulation of ___________ is unregulated power supply
Q.18.
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?
Q.19.
As the junction temperature increases, the voltage breakdown point for Zener mechanism ___________
Q.20.
As the junction temperature increases, the voltage breakdown point for avalanche mechanism ___________