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ECAT Pre General Science Physics Chapter 18 Electronics Online Test
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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 18 Electronics Online Test
The use of chips in electrons is described in the form of:
All the valence electrons present in a crystal of silicon are bound in their orbits by
The reverse saturation current in a PN junction diode is only due to
Field lines are closer to each other in the region where the filed is
Truth table of logic function:
If both the inputs given to a gate ae 1 such that the output is 0, then it is:
The value of relative permittivity of different dielectrics are
When transistors are used in digital circuits they usually operate in the
An LED emits light when it is:
Computer chips are made from:
Op-amp has been discussed as comparator of:
The electric field lines start from
A potential barrier of 0.7V exists across p-n junction made from:
In the text book, the transistor amplifier circuit is a:
In reverse-biased p-n junction, the reverse current is due to flow of:
To display a digit of EIGHT, the number of ON LED'S are:
By placing a dielectric in between the charges, the electrostatic force between them
Most of the electrons in the base of an NPN transistor flow
Michael Faraday is known by his work on
The intensity at a point due to a charge is inversely proportional to
To turn the transistor OFF, the base current is set:
In an N-type silicon, which of the following statement is true
The number of LED'S needed to display all the digits is:
In the forward biases situation, the current flowing across the p-n junction is a few:
The number of input terminals of an op-amp is:
Majority charge carriers in the p-region of p-n junction are:
A hole in p-type my be due to:
An electronic computer is basically a vast arrangement of electronic switches which are made from
The SI unit of charge is
In AND gate, the output is 1 if:
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