Question # 1

Which factor does not affect the conductivity of PN-Junction diode.

Choose an answer

Doping

Temperature

Voltage

Pressure

Improper bisting of a transistor circiut produces:

Choose an answer

Heavy loading of emitter current

Distortion in the output output signal

Excessive heat at collector terminal

Faculty location of load line

In case of op-amp as an inverting amplifier, V₊ - V_- = 0, this is because

Choose an answer

Open gain loop is very low

Closed loop gain is very high

Open loop gain is very high

Both (a) and (a)

An expression for gain of an inverting amplifier is

Choose an answer

(R₁R₂)

None of these

For automatic Switching of streetlight, the op amplifier is used as.

Choose an answer

Inductor

Converter

Comparator

Thermistor

The average gap for Germanium at 0K is

Choose an answer

1.12 ev

0.02 ev

6.72 ev

7.2 ev

Which diode works at reverse biasing.

Choose an answer

LED

Photo voltaic cell

Photo diode

Silicon diode

In photovoltaic cell, current is directly proportional to.

Choose an answer

Wavelength of light

Intensity of light

Energy

Frequency of light

The sensor of light is.

Choose an answer

Transistor

LED

Diode

Light dependent resistance

The ratio Beta in transistor is called.

Choose an answer

Voltage gain

Emitter gain

Current gain

Nuclear gain

One use of a single p-n junction semiconductor in an electrical circuit is a

Choose an answer

Rectifier

Transistor

Battery

Diode

Most of the electrons in the base of an NPN transistor flow:

Choose an answer

Out of the base lead

Into the collector

Into the emit

Into the base supply

Truth table of logic function.

Choose an answer

Summarize its output values only

Tabulates all its input conditions only

Display all its input and output possibility

Is not base on logic algebra

A photo diode can turn its current ON and OFF in

Choose an answer

Micro seconds

Mega seconds

Nano seconds

Mili seconds

Depletion region carries.

Choose an answer

-ve charge

+ve charge

Ions

No charge

Light emitting diodes are made from semiconductors.

Choose an answer

Silicon

Germanium

Carbon

Gallium arsenide

Conversion of A.C into D.C is called:

Choose an answer

Compton effect

Rectification

Amplification

Pair production

More Classes

Other Links

Physics FSC Part 2 Chapter 18 Online MCQ's Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer