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Home  arrow Chapter 3: Diode Circuits  arrow Multiple Choice Questions

Multiple Choice Questions



This activity contains 30 questions.

Question 1.
A Zener diode is based on the principle of:

 
End of Question 1


Question 2.
Silicon diode is less suited for low voltage rectifier operation because:

 
End of Question 2


Question 3.
Silicon is not suitable for fabrication of light-emitting diodes because it is:

 
End of Question 3


Question 4.
For an abrupt junction Varactor diode, the dependence of the device capacitance (C), an applied reverse-bias (V) is given by:

 
End of Question 4


Question 5.
A Zener diode:

 
End of Question 5


Question 6.
Which of these is a best description of a Zener diode?

 
End of Question 6


Question 7.
When two Zener diodes each of 10 V and 15 V are connected in series, then the overall voltage between them when they are in conduction is

 
End of Question 7


Question 8.
In a standard regulator circuit that uses Zener diode 10 V, the input voltage varies from 25 to 40 V, load current varies from 10 to 20 mA, and the minimum Zener current is 5 mA, the value of the series resistance in ohms will be:

 
End of Question 8


Question 9.
The LED is usually made of materials like:

 
End of Question 9


Question 10.
Varactor diodes are used in FM receivers to obtain:

 
End of Question 10


Question 11.
No-load voltage of power supply is 100 V and full-load voltage is 80 V, the percentage of regulation is:

 
End of Question 11


Question 12.
Zener diodes are used as:

 
End of Question 12


Question 13.
Zener diodes are:

 
End of Question 13


Question 14.
Silicon diode is less suited for low voltage rectifier operation because:

 
End of Question 14


Question 15.
Silicon is not suitable for fabrication of light emitting diodes because it is:

 
End of Question 15


Question 16.
In an abrupt junction Varactor diode, the dependence of the device capacitance (C) and applied reverse-bias (V) is given by:

 
End of Question 16


Question 17.
A general propose diode is more likely to suffer an avalanche breakdown rather than a Zener breakdown because:

 
End of Question 17


Question 18.
A Zener diode:

 
End of Question 18


Question 19.
If the junction temperature of LED is increased the radiant output power:

 
End of Question 19


Question 20.
The Zener effect is valid approximately:

 
End of Question 20


Question 21.
Each diode of full-wave centre-tapped rectifier conducts for:

 
End of Question 21


Question 22.
The transfer characteristics of a diode relates to:

 
End of Question 22


Question 23.
The clipping action of a diode requires that its forward resistance:

 
End of Question 23


Question 24.
For a low voltage rectification:

 
End of Question 24


Question 25.
If Vm is the peak value of an applied voltage in a half-wave rectifier with a large capacitor across the load, then PIV is:

 
End of Question 25


Question 26.
The induction filter is mostly used for rectifiers with:

 
End of Question 26


Question 27.
The most significant component of ripple voltage in a half-wave rectifier is contained in:

 
End of Question 27


Question 28.
The disadvantages of capacitor input LC filter are:

 
End of Question 28


Question 29.
Larger the value of the capacitor filter:

 
End of Question 29


Question 30.
Which rectifier requires four diodes?

 
End of Question 30





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