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Solids Semi Conductor Devices and Communication System Test Online

Test Name Solids & Semi Conductor Devices and Communication System Test
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Solids & Semi Conductor Devices and Communication System Test Being Provided over here. Attempt online multiple choice questions of Solids and Semi Conductors Devices and also get Communication System Test at this page.

Solids Semi Conductor Devices and Communication System Test Online

Physics

1. To a germanium sample, traces of gallium are added as an impurity. The resultant sample would behave like.

 

Question 1 of 15

2. The variation of anode current in a triode valve corresponding to a change in grid potential at three different values of the plate potential is shown in the given figure. The mutual conductance of triode is:

 

37

Question 2 of 15

3. In n-type semiconductor, majority charge carriers are

 

Question 3 of 15

4. Which logic gate is represented by the following combination of logic gates?

 

39

Question 4 of 15

5. An amplifier has a voltage gain Av = 1000. The voltage gain in dB is:

 

Question 5 of 15

6. Which of the following is an amorphous solid?

 

Question 6 of 15

7. The value of current gain α of a transistor is 0.98. The value of β will be:

 

Question 7 of 15

8. In communication with help of antenna if height is double then the range covered which was initially r would become

 

Question 8 of 15

9. In a diode, when there is a saturation current the plate resistance will be:

 

Question 9 of 15

10. Diode is used as a/an

 

Question 10 of 15

11. The transfer ratio β of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is 1kΩ. The peak value of the collector A.C. current for an A.C. input voltage of 0.01 V, is

 

Question 11 of 15

12. When a p-n diode is reverse biased, then

 

Question 12 of 15

13. The voltage gain of the following amplifier is

41

Question 13 of 15

14. When the two semiconductors p- and n-type are brought into contact they form a p-n junction, which acts like a/an

 

Question 14 of 15

15. At 0 K temperature, a p-type semiconductor

 

Question 15 of 15


 

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