Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | Negative feedback is used in audio amplifiers to |

A. | operate class C [Wrong Answer] |

B. | reduce distortion [Correct Answer] |

C. | increase distortion [Wrong Answer] |

D. | increase gain [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ A person with a receiver is 5 km away from the transmitter. What is the distance that this person must move further to detect at 3 dB decrease in signal strength?

942 m

2070 m

4978 m

5320 m

⇒ The resonant frequency of a series resonant circuit is

arithmetic mean of half power frequencies

independent of inductance of the circuit

independent of capacitance of the circuit

geometric mean of half power frequencies

⇒ A receiver has poor selectivity. It will also have poor

sensitivity

double spotting

blocking

diversity reception

⇒ In a dynamometer 3 phase power factor meter, the planes of the two moving coils are at

60°

0°

120°

90°

⇒ If the absolute value of a number is less than decimal 1, the sign of exponent in floating point representation is

zero

negative

zero or negative

positive

⇒ The transfer function V

_{2}/V

_{1}for figure

a zero at origin

a zero at infinity

no zero

a zero at

*j*1

⇒ The parameter A of a two port network is equal to

V

_{2}/V

_{1}with I

_{1}= 0

V

_{1}/I

_{2}with V

_{2}= 0

I

_{1}/I

_{2}with V

_{2}= 0

V

_{1}/V

_{2}with I

_{2}= 0

⇒ In 8085 microprocessor, what is the length of IR (instruction register)?

6 bits

8 bits

12 bits

16 bits

⇒ Depending on the technique used, digitized television requires a bit rate between __________ millions.

40 and 92.5

25 and 60

30 and 82.5

2

⇒ A two port network is symmetrical if

*z*

_{11}

*z*

_{12}-

*z*

_{12}

*z*

_{21}= 1

AD - BC = 1

*h*

_{11}

*h*

_{22}-

*h*

_{12}

*h*

_{41}= 1

*y*

_{11}

*y*

_{22}=

*y*

_{12}

*y*

_{21}= 1

⇒ Which of the following bridges is also used in an oscillator?

Maxwell

Schering

Hay

Wien

⇒ The inductance of connecting leads can be a source of

low frequency parasitics

high frequency parasitics

carrier frequency parasitics

none of the above

⇒ For the circuit of the given figure, the output equatio

Y = ABCD

Y = AB + CD

Y = A + BCD

Y = ABC + D

⇒ Tuned voltage amplifiers are not used

radio receivers

public address system

T.V. Receivers

band of freq. selected and amplified

⇒ In a low level AM system, the amplifier which follows the modulated stage must be the

linear device

harmonic device

class C amplifier

non-linear device

⇒ If luminance signal Y = 0.3 R + 0.59 G + 0.11 B, the hue of R - Y colour is

0.7 R - 0.59 G - 0.11 B

- 0.7 R + 0.59 G + 0.11 B

1.3 R - 0.59 G - 0.11 B

none of the above

⇒ A flip-flop circuit is

monostable

bistable

multistable

unstable

⇒ In a N-P-N transistor the function of the emitter is

to emit or inject holes into the collector

to emit or inject electrons into the collector

to emit or inject electrons into the base

to emit or inject holes into the base

⇒ In a 100 turn coil, if the flux through each turn is (

*t*

^{3}- 2

*t*)

*m*W

_{b}, the magnitude of the induced emf in the coil at a time of 4 sec is

46 mV

56 mV

4.6 V

5.6 V

⇒ In an ac series RLC circuit the maximum phase difference between any two voltages can be

90°

45°

- 90°

180°

⇒ -8 is equal to signed binary number

10001000

1000

10000000

11000000

⇒ An amplifier of passband 450 kHz to 460 kHz will be named as

video amplifier

audio frequency amplifier

tuned voltage amplifier

wideband amplifier

⇒ In 8085 microprocessor, which of the following interrupts is unmaskable interrupts?

RST 5.5

RST 7.5

TRAP

INTR

⇒ The initial state of MOD-16 down counter is 011. After 37 clock pulses, the state of the counter will be

1011

110

101

1

⇒ If transmitted power is 10 kW, the field strength at a distance

*d*is 50 mV/m. If transmitted power is reduced to 2.5 kW, the field strength at the same point will be

25 mV/m

12.5 mV/m

6.25 mV/m

3.125 mV/m

⇒ The inverse Fourier transform of δ(

*t*) is

∪(

*t*)

1

δ(

*t*)

*e*

^{j2pt}

⇒ A direct radiating cone type loudspeaker attenuates :

medium range frequencies

very low frequencies

high frequencies

very low and high frequencies

⇒ Narrow band FM signal can be represented as

A cos (2p

*f*) - β

_{c}t*A*sin (2p

*f*) sin (2p

_{c}t*f*)

_{m}tA cos (2p

*f*) - β

_{m}t*A*sin (2p

*f*) sin (2p

_{c}t*f*)

_{m}tA cos (2p

*f*) + β

_{c}t*A*sin (2p

*f*) sin (2p

_{c}t*f*)

_{m}tA cos (2p

*f*) + β

_{m}t*A*sin (2p

*f*) sin (2p

_{m}t*f*)

_{c}t⇒ If an inverter is placed at the input to an

*SR*flip-flop, the result is

T flip-flop

D flip-flop

JK flip-flop

BCD decade counter

⇒ P flag is for parity.

TRUE

FALSE