Electronic Devices-Semiconductor Diode (NEET Physics): Questions 1 - 5 of 14

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Question number: 1

» Electronic Devices » Semiconductor Diode

MCQ▾

Question

Which of the following materials are crystalline?

(1) Copper (2) Sodium chloride

(3) Diamond (4) Wood

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response
a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Question number: 2

» Electronic Devices » Semiconductor Diode

MCQ▾

Question

The mobility of free electrons is more that the mobility of holes because,

Choices

Choice (4) Response
a.

They require less energy to continue their motion.

b.

They carry negative charge

c.

They are of smaller size

d.

They suffer less number of collisions

Question number: 3

» Electronic Devices » Semiconductor Diode

MCQ▾

Question

The dominant mechanisms for motion of charge carriers in forward and reverse biased silicon P-N junctions are

Choices

Choice (4) Response
a.

Drift in forward bias, diffusion in reverse bias

b.

Drift in both forward and reverse bias

c.

Diffusion in forward bias, drift in reverse bias

d.

Diffusion in both forward and reverse bias

Question number: 4

» Electronic Devices » Semiconductor Diode

MCQ▾

Question

The approximate ratio of resistances in the forward and reverse bias of the PN-junction diode is

Choices

Choice (4) Response
a.

102:1

b.

102:1

c.

1:104

d.

1:104

Passage

A student performs an experiment for drawing the static characteristic curve of a triode valve in the laboratory. The following data were obtained from the linear portion of the curves:

Data obtained from the linear portion of curve

List of data obtaining from liner portion of curve of static characteristic curve of a triode

Grid voltage V g (Volt)

-2.0

-3.5

-2.0

Plate voltage V p (Volt)

180

180

120

Plate current I P (mA)

15

7

10

Question number: 5 (1 of 3 Based on Passage) Show Passage

» Electronic Devices » Semiconductor Diode

MCQ▾

Question

Calculate the plate resistance r p of the triode valve?

Choices

Choice (4) Response
a.

0.12 × 10 4 ohm

b.

1.2 × 10 4 ohm

c.

1.3 × 10 4 ohm

d.

1.4 × 10 4 ohm

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