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Q1. | Noise which assumes great importance at high frequencies is |

A. | flicker noise [Wrong Answer] |

B. | Johnson noise [Wrong Answer] |

C. | transit-time 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 carbon resistor colour code, the fourth band indicates tolerance.

TRUE

FALSE

⇒ RAMs can be built with bipolar or CMOS transistor RAMs that are not possible with bipolar transistors are

SRAM

SRAM, DRAM

DRAM

PROM

⇒ The subtraction of a binary number Y from another binary number X, done by adding the 2's complement of Y to X results in a binary number without overflow. This implies that the result is

-ve and is in normal form

-ve and 2's complement form

+ve and is in normal form

+ve and in 2's complement

⇒ The direction of vectors gives the direction of propagation of electromagnetic waves

Vector (E x H)

Vector (F x H)

Vector E

Vector H

⇒ Which control action is also called rate control?

Proportional

Derivative

Integral

Proportional plus integral

⇒ It is necessary to measure the amplitudes of two signals and also the phase difference between them. This can be done by using a

phase meter

waveform meter

vector voltmeter

digital voltmeter

⇒ A sphere with charge Q was placed in, but not touching a larger hollow sphere. If there is any charge initially on the outer sphere; to remove it the outer sphere was earthed momentarily, and then the inner sphere was removed. The charge remaining on the outer sphere was then measured. This charge was found to be __________ to the charge on the inner sphere.

equal and of same again

equal and of opposite sign

unequal and of same sign

unequal and of opposite sign

⇒ The resonant frequency of an R

_{F}amplifier is 1 MHz and its bandwidth is 10 kHz. The Q factor will be

10

100

0.01

0.1

⇒ A wave trap is a

series tuned circuit

a parallel tuned circuit

either a series tuned circuit or parallel tuned circuit

none of the above

⇒ A silicon diode is forward biased and total applied voltage is 5 V. The voltage across

*p*-

*n*junction is

5 V

Slightly less than 5 V

0.7 V

0

⇒ Ferrites are

ferromagnetic materials

ferrimagnetic materials

ferroelectric materials

ferri-ferromagnetic materials

⇒ For the K map of the given figure the simplified Boolean expressio

AC + A B

A BC + A B C + A B C + AB C

AC + A B + AC

A C + A B + AB

⇒ Y = A + A B is the same as

Y = AB

Y = A + B

Y = A + B

Y = A + B

⇒ A series RL circuit is excited by a voltage

*v*(

*t*) = V

_{m }sin (ω

*t*+ Φ). The transient current will be zero if

Φ = 0

ω = 0

Φ = tan

^{-1}(ωL/R)

ω - tan

^{-1}(ωL/R) = p/2

⇒ Which type of gate is in the given fig

NOR

OR

NAND

EX-OR

⇒ Find R

_{TH}across the terminals A a

52.28 Ω

58.28 Ω

52.82 Ω

58.82 Ω

⇒ The hexadecimal number (3E8)

_{16}is equal to decimal number

1000

982

768

323

⇒ A reflex klystron oscillator uses

one cavity resonator

two cavity resonators

three cavity resonators

none of the above

⇒ Consider the following part of a C program float a

2 and 9

2.0 and 9.0

2.0 and 2.0

9.0 and 2.0

⇒ In figure, the value of R shoul

5 kΩ

50 kΩ

20 kΩ

10 kΩ

⇒ Directivity gain depends on

the distribution of radiated power in space

solid angle of the radiated field pattern

both (a) and (b)

none of the above

⇒ If

*i*

_{b}is plate current,

*e*

_{b}is plate voltage and

*e*

_{c}is grid voltage the

*v*-

*i*curve of a vacuum triode

0.5 and 1

- 2 and 1

30 and 1

30 and 1.5

⇒ Figure shows a chopper feeding RLE load, The free wheeling diode conducts w

thyristor is on

thyristor is off

both when thyristor is on and thyristor is off

partly when thyristor is off and partly when thyristor is on

⇒ Maximum power transfer theorem finds application in

power circuits

distribution circuits

communication circuits

both power and communication circuits

⇒ The content of which of the following determines the state of the CPU at the end of the execute cycle (when the interrupt is recognized)?

- Program counter
- Processor register
- Certain status conditions

1 and 2

2 and 3

1 and 3

1, 2 and 3

⇒ When a UJT is used as a relaxation oscillator the current should be

less than I

_{p}

more than I

_{v}

more than I

_{p}but less than I

_{v}

negative

⇒ A multilevel decoder is more costly as compared to single level decoder.

TRUE

FALSE

⇒ Consider the following statements about root locus

- The intersection of root locus branches with the imaginary axis can be determined by the use of Routh criterion
- Segments of real axis having an odd number of real axis open loop poles plus zeros to their right are not parts of root locus
- The number of root locus branches terminating on infinity is always zero

1, 2 and 3

1 and 2 only

1 only

2 and 3 only

⇒ The numerical value of directivity of current element of half-wave dipole is 1.76 and 2.15 dB respectively. The directive gain of half-wave dipole over current element will be

3.91 dB

1.95 dB

0.39 dB

0.195 dB

⇒ With on-chip decoding,

*n*address lines can access

2

*n*memory locations

2

*n*

^{2}memory locations

2

*memory locations*

^{n}*n*

^{2}memory location