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MCQ's Test For MDCAT Physics Chapter 14 Electronics MCQ's Test
Try The MCQ's Test For MDCAT Physics Chapter 14 Electronics MCQ's Test
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Total Questions20
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Time Allowed20
MDCAT Physics Chapter 14 Electronics MCQ's Test
00:00
Question # 1
The diodes works on
Question # 2
A non-inverting amplifier has infinite input resistance then the voltage gain of noninverting amplifier will be:
Question # 3
The method by which only one half of A.C cycle is converted into direct current is called
Question # 4
Gain of operational amplifier is independent of;
Question # 5
In full wave rectification, the output D.C. voltage across the load is obtainedfor
Question # 6
A diode characteristics curve is a graph plotted between;
Question # 7
A diode as a rectifier converts:
Question # 8
The diode charactristics curve is plot between
Question # 9
The unit of gain (G) for non-inverting amplifier is
Question # 10
A pulsating DC can be converted into constant voltage by using
Question # 11
In a full wave rectifier:
Question # 12
When two semiconductors of p- and n-type are brought into contact, they from a p-n junction which act like a:
Question # 13
A non-conducting semiconductor diode is:
Question # 14
The junction potential for Germanium is;
Question # 15
In full wave rectification by bridge the number of diodes required are
Question # 16
The efficiency of half wave rectifier is:
Question # 17
A pure semiconductor has:
Question # 18
A PN junction diode cannot be use:
Question # 19
A device which convert DC into AC is calleD)
Question # 20
The simplest type of rectification known as half wave rectification is obtained by
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MCAT Physics Chapter 14 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A diode as a rectifier converts: |
A. A)c into D)c
B. D)c into A)c
C. Varying D)c current into constant D)c current
D. High voltage into low voltage and vice-versa
|
| 2 | For a normal AC cycle, during T/2 to T the diode act as: |
A. Open switch
B. full wave rectifier
C. Close switch
D. All are correct
|
| 3 | The resistance of operational amplifier between inverting and non-inverting terminal is of the order of: |
A. Few Ohms
B. Mega Ohms
C. Few Kilo Ohms
D. Micro Ohms
|
| 4 | Gain of operational amplifier is independent of; |
A. Internal structure
B. External Structure
C. Batteries
D. Potential changes
|
| 5 | For full wave rectification, the minimum number of diodes used is: |
A. 1
B. 2
C. 3
D. 4
|
| 6 | In full wave rectification, the output D.C. voltage across the load is obtainedfor |
A. The positive half cycle of input A.C. (C) The complete cycle of
input A.C.
B. The negative half cycle of input A.C.
C. The complete cycle of
D. All of the above
|
| 7 | The simplest type of rectification known as half wave rectification is obtained by |
A. Using a transistor
B. Suppressing the harmonics in A.C. voltage
C. Suppressing half wave of A.C. supply by using diode
D. Using a Coolidge
|
| 8 | In a half wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be: |
A. 25 Hz
B. 70.7 Hz
C. 50 Hz
D. 100 Hz
|
| 9 | A certain noninverting amplifier has R1 of 1 kΩ and R2 of 100 kΩ. The closed-loop voltage gain is ……… |
A. 100,000
B. 100
C. 1000
D. 101
|
| 10 | In a full wave rectifier with input frequency 50Hz. The frequency of pulsating D)C) received as an output across the load is |
A. 50 Hz
B. 100 Hz
C. 500 Hz
D. zero
|
Test Questions
Share your comments & questions here
Muhammad usama
31 Aug 2018These tests are not according to new syllabus of mdcat