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Q1. | The number of channels in a stereophonic system is |

A. | 8 [Wrong Answer] |

B. | 4 [Wrong Answer] |

C. | 2 [Correct Answer] |

D. | 1 [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ Decimal number 5436 when converted into 9's complement will become

4356

4653

4563

4655

⇒ The reading of the voltmeter in figure will be __________ v

100

150

zero

200

⇒

**Assertion (A):** A demultiplexer can be used as a decoder.

**Reason (R):** A demultiplexer can be built by using AND gates only.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

⇒ Which of the following assembler directives in 8085 does not cause any memory location to be used μp?

D S

D B

D W

E Q U

⇒ Which of these is also called 'hot carrier diode'?

PIN diode

LED

Photo diode

Schottky diode

⇒ The signal input to a given amplifier is made up of 100 mΩ signal power and 1 mΩ noise power. The amplifier contributes an additional 100 mΩ of noise and has a power gain of 20 dB. The output signal-to-noise ratio is

100

50

10

5

⇒ A dielectric material must be

insulator

good conductor

resistor

semiconductor

⇒ An

*m*derived and constant

*k*filter section connected in cascade give

proper impedance matching

proper phase shift characteristic

proper attenuation characteristic

all of the above

⇒ If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be

a voltage source

a current source

both of the above

none of the above

⇒ Nichols chart consists of M and N locii in log magnitude versus phase diagram.

TRUE

FALSE

⇒ Consider the following stateme

1, 2, 3

1, 3, 4

2, 3, 4

1, 2, 4

⇒ The symbol in figure is

UJT

PUT

Shockley diode

TRIAC

⇒ A 6 bit R-2

*R*ladder D/A converter has a reference voltage of 6.5 V. It meets standard linearity then resolution in percent and volts.

3% 7 V

6.4 V, 2%

0.1%, 1.57 V

1.57%, 0.1 V

⇒ Which control action is also called rate control?

Proportional

Derivative

Integral

Proportional plus integral

⇒ If D is mouth diameter of a paraboloid reflector, its directivity is proportional to

D

D

^{2}

D

D

^{3}

⇒ Minute cracks in metals and minute faults in welded joints can be detected using

IR rays

UV rays

a rays

X-ray/γ-rays

⇒ The function Z(

*s*) has a pole at infinity if

the degree of numerator and denominator of Z(

*s*) are equal

the numerator of Z(

*s*) is one degree higher than denominator

the denominator of Z(

*s*) is one degree higher than numerator

the degree of numerator and denominator are either equal or differ by one

⇒ Multiphase choppers are used in

low power circuits

high power circuit

both low and high power circuits

medium power circuits

⇒

**Assertion (A):** In state space analysis, capacitors are taken to be in tree.

**Reason (R):** State variable analysis is very suitable for computer solution.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ The maximum effective aperture of λ/2 (half-wave) antenna is

0.013 λ

^{2}

0.13 λ

^{2}

1.3 λ

^{2}

13 λ

^{2}

⇒ A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What percentage negative feedback should be introduced to the amplifier so that linear oscillations result?

0.0125

0.025

-0.0125

-0.025

⇒ The circuit of the given figure gives the output

*YAB*

A + B

A B

A + B

A + B

A B

A + B

⇒ The inverse Laplace transform of 1/(

⇒ For stable network, the real part of poles and zeros of driving point function must be

negative

negative or zero

zero

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⇒ Due to the formation of Schottky defects the density of the crystal

increases slightly

increases appreciably

decreases slightly

decreases appreciably

⇒ A wire has a diameter

R/3

3 R

R/9

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⇒ Choose the correct statement

The reflection coefficient (r) of a transmission line is greater than 1

r varies from 0 to ∞

r is less than or equal to 1

r varies from - ∞ to + ∞

⇒ An RLC series circuit has R = 30 Ω, X

30 ∠0°.

30 ∠45°

42.42 ∠45°

90 ∠45°.

⇒ A line of characteristic impedance 400 Ω is terminated by a resistance of 400 Ω. The reflected quantities are

zero

equal to incident quantities

half the incident quantities

double the incident quantities

⇒

A-1, B-3, C-4

A-1, B-4, C-3

A-5, B-4, C-3

A-1, B-5, C-2

⇒ The inverse Laplace transform of 1/(

*s*-*a*)^{2}is*e*^{at}*t**e*^{at}*t*^{2}*e*^{at}*e*/^{at}*t*⇒ For stable network, the real part of poles and zeros of driving point function must be

negative

negative or zero

zero

positive

⇒ Due to the formation of Schottky defects the density of the crystal

increases slightly

increases appreciably

decreases slightly

decreases appreciably

⇒ A wire has a diameter

*d*and resistance R. If the diameter is made 3*d*, the length and material remaining the same, the new value of resistance will beR/3

3 R

R/9

9 R

⇒ Choose the correct statement

The reflection coefficient (r) of a transmission line is greater than 1

r varies from 0 to ∞

r is less than or equal to 1

r varies from - ∞ to + ∞

⇒ An RLC series circuit has R = 30 Ω, X

_{L}= 30 Ω and X_{C}= 30 W. Its impedance is30 ∠0°.

30 ∠45°

42.42 ∠45°

90 ∠45°.

⇒ A line of characteristic impedance 400 Ω is terminated by a resistance of 400 Ω. The reflected quantities are

zero

equal to incident quantities

half the incident quantities

double the incident quantities

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | V_{OH}(min) | 1. | 2.4 V |

B. | V_{IH}(min) | 2. | 1.5 V |

C. | V_{OL}(max) | 3. | 0.4 V |

4. | 2.0 V | ||

5. | 0.8 V |

A-1, B-3, C-4

A-1, B-4, C-3

A-5, B-4, C-3

A-1, B-5, C-2