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 ___________
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