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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 Test Help For Physics Subject Test Prep. All Admissions Test. All Jobs Test prep. Medical Test prep. Engineering Test prep.

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.

## 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: 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? 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 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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