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Q1. | Noise generated in a resistor is also known as |

A. | partition noise [Wrong Answer] |

B. | white noise [Wrong Answer] |

C. | thermal noise [Correct Answer] |

D. | shot noise [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 :**

⇒ In the wheatstone bridge in figure, each resistance is increased by 0.05%. The value of v

_{0}will

50 mV

5 mV

0.1 mV

zero

⇒ In a series resonant circuit, the resonant frequency is

geometric mean of half power frequencies

arithmetic mean of half power frequencies

difference of half power frequencies

none of the above

⇒

**Assertion (A):** Microprocessor 8085 has an 8 bit register called accumulator which stores intermediate answers during a computer operation.

**Reason (R):** Accumulator can send or receive data.

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 correct R is wrong

A is wrong R is correct

⇒ The transfer function of a discrete time LTI system is give

Both S1 and S2 are true

Both S2 and S3 are true

Both S1 and S3 are true

S1, S2 and S3 are all true

⇒ Cassegrain feed is used with a parabolic reflection to

reduce the size of the main reflector

increase the gain of the system

increase the beamwidth of the system

allow the feed to be placed at a convenient point

⇒ In figure the voltage distribution on a vertical earthed antenna is represented

curve A

curve B

curve C

curve D

⇒ To find current in a resistance connected in a network, Thevenin's theorem is used V

_{TH}= 20 V and R

_{TH}= 5 Ω. The current through the resistance

is 4 A

is 4 A or less

is less than 4 A

may be 4 A or less or more than 4 A

⇒ The size of cache memory in most microcomputers is about

a few bytes

a few kilobytes

a few megabytes

a few gigabytes

⇒ A sinusoidal current having peak value of 7.07 A is superimposed on dc of 5A. If a hot-wire ammeter is used to measure the combined current in the circuit, it will indicate __________ ampere.

7.07

10

12.07

2.07

⇒ Which of the following is λ/2 length?

Marconi

Hertz

Parabolic

Yagi-uda

⇒ The log magnitude for the system in the given figure is (where T =

20 log (1 + ωT)

-20 log (1 + ωT)

-10 log (1 + ω

^{2}T

^{2})

-20 log (1 + ω

^{2}T

^{2})

⇒ The number of bits of information required to indicate the correct selection of 3 independent consecutive events out of 75 equally probable events is

6.23

18.69

10.46

24.92

⇒ Consider the following statements

- Gunn diode can be used in combinational logic circuits.
- Gunn diode can be used in sequential logic circuits.
- Both Gunn diode and GaAs Mesfet can be used in logic circuits.

1, 2, and 3

1 and 2 only

2 and 3 only

1 and 3 only

⇒ DMA stands for direct memory access.

TRUE

FALSE

⇒ A lead compensator

speeds up the transient response

increases the stability margin

increases the stability margin and speeds up the transient-response.

none of the above.

⇒ The circuit shown below is functionally equivalen

NOR gate

OR gate

EX-OR gate

NAND gate

⇒ The symbol in figure is

UJT

PUT

Shockley diode

TRIAC

⇒

Match the following:

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

A. | lag compensation | 1. | Exterior of unit circle |z| = 1 |

B. | lead compensation | 2. | PD control |

C. | stability | 3. | Non-minimum phase |

D. | Instability | 4. | Left half s plane |

5. | PI control |

A-2, B-5, C-1, D-3

A-3, B-1, C-2, D-5

A-1, B-2, C-3, D-4

A-5, B-2, C-4, D-1

⇒ A

*p*-

*n*junction diode has

low forward and high reverse resistance

a non-linear

*v*-

*i*characteristics

zero forward current till the forward voltage reaches cut in value

all of the above

⇒ A sine wave is passed through an amplifier which severely limits it symmetrically. If then passes to a second amplifier which is narrow band and tuned to the frequency of the original sine wave. What will be the output wave from this second amplifier?

A square wave of the same frequency as that of the original sine wave

A square wave of double the frequency of that of original sine wave

A sine wave of constant amplitude at the frequency of the original sine wave

A sine wave of constant amplitude at double frequency of the original sine wave

⇒ Consider the following library functions

- EXP (
*i.e., e*^{x}) - ARCTAN (
*i.e.* tan^{-1} *x*) - SQRT (
*i.e., x*) - AES (
*i.e. *|*x*|) <

All

1 and 3 only

1, 3, 4 only

1, 2 and 3 only

⇒ Some ADCs are - Parallel
- Updown
- Single slope
- Dual slope
- Successive approximation
- Stair step

Out of above which ones do not use DAC?

1 only

1, 3, 4

1, 2, 3

1, 5, 6

⇒ In which device does the extent of light controls the conduction

photovoltaic cell

photo electric relay

LED

photo sensitive device

⇒ In an amplitude modulated waveform, the amplitude of the sideband is

independent of the carrier amplitude

independent of the modulation index

carrier amplitude x modulation index

1/2 carrier amplitude x modulation index

⇒ The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If *X*-plate input is 2 sin ω*t*, the *Y*-plate input is

2 sin ω*t*

2 sin (ω*t* + 45°)

2 sin (ω*t* - 45°)

22 sin ω*t* + 45°)

⇒ The depletion layer width of Junction

decreases with light doping

is independent of applied voltage

is increased under reverse bias

increases with heavy doping

⇒ The static characteristic of an adequately forward biased *p*-*n* junction is a straight line if the plot is of

log I vs log V

log I vs V

I vs log V

I vs V

⇒ The number of valence electrons in pentavalent impurity is

5

4

3

1

⇒ Which of the following operations will give the result 2 in C?

42857

4.0 / 2

4.0 / 2.0

4 / 2.0

⇒ If B_{max} is the maximum flux density, eddy current loss is proportional to

B_{max}

B^{1.6}_{max}

B^{2}_{max}

B^{3}_{max}

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