A class B amplifier consists of _______ transistors in order to conduct the input signal over the entire cycle.

There are five classes class 1, class 2, class 3, class 4 and class 5 in a school. They are one above the other. Class 1 is at the bottom, then class 2 above it and so on. Five videos M1, M2, M3, M4 and M5 are displayed in these given classes. Only one video is displayed in a particular class. Each video is displayed only one time. Video M5 is displayed at an even numbered class. Video M2 is displayed at class 1. Video M1 is displayed at the class just below M5. Video M4 is not displayed at even numbered class. Which of the following statement is not correct?

A

Only one video is displayed after M3

B

Only two videos are displayed above M1

C

Only one video is displayed between M2 and M5

D

M1 is displayed between M3 and M5

In a 3-input CMOS NAND gate, the substrate terminals of NMOS transistors are grounded (lowest potential available in the circuit) and the substrate terminals of PMOS transistors are connected to VDD (maximum positive potential available in the circuit). Which of the following transistors may suffer in this circuit from the body bias effect?

A

2 NMOS transistors

B

2 PMOS transistors

C

1 NMOS transistor

D

1 PMOS transistor

Simplify : $${{{5 \over 3} \times {7 \over {51}}{\text{ of }}{{17} \over 5} - {1 \over 3}} \over {{2 \over 9} \times {5 \over 7}{\text{ of }}{{28} \over 5} - {2 \over 3}}}$$

A

$$\frac{1}{2}$$

B

4

C

2

D

$$\frac{1}{4}$$

___________ amplifiers are linear circuits, where the transistor is biased to conduct over the entire range of the input signal cycle.

A

Class A amplifiers

B

Class B amplifiers

C

Class C amplifiers

D

None of the mentioned

Consider the following statements regarding modulation : 1. The communication systems, where a weak signal is transmitted by the use of a modulation is essential in carrier signal. 2. When the frequency of the high frequency signal is varied in accordance with the intensity of the low-frequency weak signal, the modulation is said to be frequency modulation. 3. The process of recovering original baseband signal from the modulated signal is called phase modulation. Which of the above statements are correct ?

A

1 and 3 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

Consider the following statements. It converts the positive half cycle of the sinusoidal wave of the input to the pulsating DC output signal. It converts the positive half as well as negative half cycle of the sinusoidal wave of the input to pulsating DC output signal. Which of the following statements is CORRECT about half-wave rectifier?

A

Only 1

B

Only 2

C

Both 1 and 2

D

Neither 1 and 2

Consider a system whose input r and output y are related by the equation $$y\left( t \right) = \int\limits_{ - \infty }^\infty {x\left( {t - \tau } \right)} h\left( {2\tau } \right)d\tau $$
Signal Processing mcq question image

Where h(t) is shown in the graph
Which of the following four properties are possessed by the system? BIBO: Bounded input gives a bounded output
Causal: The system is causal.
LP : The system is low pass.
LTI: The system is linear and time-invariant.

A

Causal, LP

B

BIBO, LTI

C

BIBO, Causal, LTI

D

LP, LTI

Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Total number of pupils in three classes of a school is 1288. The ratio of children in three classes X, Y, Z is 39 : 64 : 58. In class X number of boys are 26 less than number of girls. Number of boys in class Y is 67.83% more than the number of boys in class X. And, girls in class Z are 25.36% less than the number of girls in class Y. (In calculating number of boys and girls, the decimal value must be rounded off to nearest whole number). Quantity A: Number of boys in class Z. Quantity B: Number of girls in class X. Quantity C: Number of girls in class Y.

A

C > B > A

B

C > A > B

C

B > C > A

D

B > A > C

E

A > B < C

Which two classes use the Shape class correctly?

A. public class Circle implements Shape { private int radius; }B. public abstract class Circle extends Shape { private int radius; }C. public class Circle extends Shape { private int radius; public void draw(); }D. public abstract class Circle implements Shape { private int radius; public void draw(); }E. public class Circle extends Shape { private int radius; public void draw() { /* code here */ } }F. public abstract class Circle implements Shape { private int radius; public void draw() { /* code here */ } }

A

B,E

B

A,C

C

C,E

D

T,H

An amplifier without feedback has a voltage gain of 50, input resistance of 1 kΩ & Output resistance of 2.5 kΩ.The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is

A

$$\frac{1}{{11}}{\text{k}}\Omega $$

B

$$\frac{1}{5}{\text{k}}\Omega $$

C

5 kΩ

D

11 kΩ

A class B amplifier consists of _______ transistors in order to conduct the input signal over the entire cycle.

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