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MCQs

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The SI unit of constant k in Coulomb's law is:
NETNUST Entry TestPhysicsElectrostatics
If the distance between two charges is doubled, the force between them will become:
NETNUST Entry TestPhysicsElectrostatics
A transistor cannot be used as
NETNUST Entry TestPhysicsElectronics
A.C is converted to D.C by
NETNUST Entry TestPhysicsElectronics
When transistor is forward biased then resistance will be
NETNUST Entry TestPhysicsElectronics
At least how many diodes are required to covert A.C fully into D.C?
NETNUST Entry TestPhysicsElectronics
To make an LED, it is impracticable to use:
NETNUST Entry TestPhysicsElectronics
A single silicon photo voltaic cell produces respectively a voltage and current of:
NETNUST Entry TestPhysicsElectronics
Photo voltaic cell:
NETNUST Entry TestPhysicsElectronics
The current produced is directly proportional to intensity of light falling on the p-n junction of:
NETNUST Entry TestPhysicsElectronics
Photodiode is operated:
NETNUST Entry TestPhysicsElectronics
The number of LED's needed to display all the digits is:
NETNUST Entry TestPhysicsElectronics
The reverse current increases with the intensity of light incident on the p-n junction of:
NETNUST Entry TestPhysicsElectronics
A diode which can turn its current ON and OFF in nano seconds is called:
NETNUST Entry TestPhysicsElectronics
The diode used for the fast detection of light is:
NETNUST Entry TestPhysicsElectronics
An LED can be made from:
NETNUST Entry TestPhysicsElectronics
A photodiode can be used:
NETNUST Entry TestPhysicsElectronics
The most commonly used diode for special purpose is:
NETNUST Entry TestPhysicsElectronics
The semiconductor diode has the property of:
NETNUST Entry TestPhysicsElectronics
The full wave rectifier circuit consists of:
NETNUST Entry TestPhysicsElectronics
During the negative half cycle of the input alternating voltage, the diode is:
NETNUST Entry TestPhysicsElectronics
Conversion of A.C into D.C is called:
NETNUST Entry TestPhysicsElectronics
In the symbol of p-n junction, the vertical line represents:
NETNUST Entry TestPhysicsElectronics
Leakage current is:
NETNUST Entry TestPhysicsElectronics
In reverse biased situation, the resistance offered by the p-n junction is the order of:
NETNUST Entry TestPhysicsElectronics
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