GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 169 - 171 of 1076

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Question 169

Appeared in Year: 2007

Question

Match List-Ⅰ List-Ⅱ▾

Group I lists four types of PN junction diodes. Match each device in Group I with one of the option in Group II to indicate the bias condition of that device in its normal mode of operation.

List-Ⅰ (Group I)List-Ⅱ (Group II)
(A)

LASER diode

(i)

Forward bias

(B)

Avalanche Photodiode

(ii)

Reverse bias

(C)

Solar Cell

(iii)

Forward bias

(D)

Zener Diode

(iv)

Reverse bias

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iv)
  • (iii)
  • (i)
  • (ii)

b.

  • (iv)
  • (i)
  • (ii)
  • (iii)

c.

  • (i)
  • (iv)
  • (ii)
  • (iii)

d.

  • (iii)
  • (ii)
  • (i)
  • (iv)

Question 170

Appeared in Year: 2008

Question

MCQ▾

Two identical NMOS transistors and are connected as shown below. is chosen so that both transistors are in saturation. The equivalent of the pair is defied to be at constant

The equivalent of the pair is

The Circuit Consisting of Two Identical NMOS Transistors

Choices

Choice (4)Response

a.

Nearly equal to of

b.

The product of individual s of the transistors

c.

The sum of individual s of the transistors

d.

Nearly equal to the of

Question 171

Appeared in Year: 2010

Question

MCQ▾

The amplifier circuit shown below uses a silicon transistor. The capacitors and can be assumed to be short at signal frequency and effect of output resistance can be ignored. If is disconnected from the circuit, which one of the following statements is true

The Circuit Consists of Transistor, Capacitor and Resisters

Choices

Choice (4)Response

a.

The input resistance increases and magnitude of voltage gain decreases

b.

Input resistance and the magnitude of voltage gain increases

c.

Input resistance and magnitude of voltage gain decreases

d.

The input resistance decreases and magnitude of voltage gain increases

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