Engineering Physics II Mock Test 8

10%

Question 1 of 10

1. The leakage current is measured in ________

μA

Question 1 of 10

Question 2 of 10

2. The principle of a solar cell is same as the photodiode.

True

False

Question 2 of 10

Question 3 of 10

3. When the reverse voltage across the Zener diode is increased _____________

The value of cut-off potential increases

No effect

The value of cut-off potential decreases

The value of saturation current increases

Question 3 of 10

Question 4 of 10

4. What should be the biasing of the LED?

Forward bias than Reverse bias

Reverse bias

Forward bias

No biasing required

Question 4 of 10

Question 5 of 10

5. What is the level of doping in Zener Diode?

No doping

Moderately Doped

Lightly Doped

Heavily Doped

Question 5 of 10

Question 6 of 10

6. The voltage at which forward bias current increases rapidly is called as ___________

Breakdown Voltage

Forward Voltage

Voltage barrier

Knee Voltage

Question 6 of 10

Question 7 of 10

7. Which junction is forward biased when transistor is used as an amplifier?

Emitter-Collector

Emitter-Base

No junction is forward biased

Collector-Base

Question 7 of 10

Question 8 of 10

8. From the output characteristics of a transistor, one cannot calculate __________

I_B

V_CE

V_BE

I_c

Question 8 of 10

Question 9 of 10

9. In a semiconductor it is observed that three-quarters of the current is carried by electrons and one quarters by holes. If the drift speed is three times that of the holes, what is the ratio of electrons to holes?

2 : 1

1 : 2

1 : 1

4 : 1

Question 9 of 10

Question 10 of 10

10. The I-V characteristics of a solar cell are drawn in the fourth quadrant.

True

False

Question 10 of 10