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MCQ's Test For Physics ECAT Pre Engineering Chapter 18 Electronics Physics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 18 Electronics Physics
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 18 Electronics Physics
00:00
Question # 1
In the text book, the transistor amplifier circuit is a:
Question # 2
In AND gate, the output is 1 if:
Question # 3
The reverse saturation current in a PN junction diode is only due to
Question # 4
A potential barrier of 0.7V exists across p-n junction made from:
Question # 5
The number of LED'S needed to display all the digits is:
Question # 6
Michael Faraday is known by his work on
Question # 7
The intensity at a point due to a charge is inversely proportional to
Question # 8
In a transistor, collector current is controlled by
Question # 9
The value of LDR depends upon intensity of:
Question # 10
When transistors are used in digital circuits they usually operate in the
Question # 11
To turn the transistor OFF, the base current is set:
Question # 12
A diode which can turn its current ON and OFF in nono seconds is called:
Question # 13
In full wave rectification, simultaneous action is that:
Question # 14
Inverter is the name given to:
Question # 15
A potential barrier of 0.7 V exists across p-n junction made from:
Top Scorers Of Physics ECAT Pre Engineering Chapter 18 Electronics Physics MCQ`s Test
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S Sadaf Batool 21 - May - 2024 00 Min 02 Sec 60/60 -
M Muhammad Sufyan 01 - Jun - 2024 00 Min 04 Sec 60/60 -
M M Umer Arain 10 - Dec - 2024 00 Min 08 Sec 60/60 -
F Farzand Shah Farzand Shah 23 - Apr - 2024 00 Min 58 Sec 60/60 -
B Bilal Javed 10 - Mar - 2024 02 Min 03 Sec 60/60 -
D Danish Mehmood Awan 21 - May - 2024 03 Min 01 Sec 60/60 -
H Huzaifa Asim 26 - May - 2024 09 Min 51 Sec 60/60 -
A Arian Ahmed 09 - Mar - 2024 00 Min 02 Sec 55/60 -
Y Yusra Khalid 07 - Mar - 2024 00 Min 20 Sec 55/60 -
A Aarij 08 - Dec - 2024 01 Min 09 Sec 55/60 -
A Afzan Ali 03 - Jun - 2024 02 Min 04 Sec 55/60 -
H HASSAAN Hello (H.S LEGEND) 07 - Mar - 2024 03 Min 00 Sec 50/60 -
H Haniya Ali 10 - Mar - 2024 03 Min 08 Sec 50/60 -
F Fatima Muqarrab 20 - May - 2024 03 Min 46 Sec 50/60 -
S Sakhawat Jutt 29 - Aug - 2024 06 Min 08 Sec 50/60
ECAT Physics Chapter 18 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Electric field lines emerge from the charges in |
A. One dimension
B. Two dimensions
C. Three dimensions
D. Four dimensions
|
| 2 | The value of relative permittivity of different dielectrics are |
A. Equal
B. Different
C. Greater than one
D. Smaller than one
|
| 3 | In an N-type silicon, which of the following statement is true |
A. Electrons are majority carriers and trivalent atoms are the dopants
B. Electrons are minority carriers and pentavalent atoms are the dopants
C. Holes are minority carriers and pentavalent atoms are the dopants
D. Holes are majority carriers and trivalent atoms are the dopants
|
| 4 | All the valence electrons present in a crystal of silicon are bound in their orbits by |
A. Ionic bond
B. covalent bond
C. Molecular bond
D. Both (A) and (B)
|
| 5 | The reverse saturation current in a PN junction diode is only due to |
A. Majority carriers
B. Minority Carriers
C. Acceptor ions
D. Donor ions
|
| 6 | Majority charge carriers in the p-region of p-n junction are: |
A. electrons
B. positrons
C. Holes
D. Neutrons
|
| 7 | .Depletion region contains: |
A. Protons
B. Positive ions
C. Negative ions
D. Both (B) and (C)
|
| 8 | Electric field strength is defined as |
A. Work done on unit charge
B. Force exerted on unit charge
C. Distance covered by unit charge
D. Power exerted by unit charge
|
| 9 | In the text book, the transistor amplifier circuit is a: |
A. Common emitter circuit
B. Common collector circuit
C. Common base circuit
D. Any of these
|
| 10 | Improper biasing of a transistor circuit produces |
A. Heavy loading of emitter current
B. Distortion in the output signal
C. Excessive heat at collector terminal
D. Faulty location of load line
|
Test Questions
Share your comments & questions here
SHAHID FAROOQ
21 Jun 2019good practice forprepration of test