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Q1. | Hysteresis loss is proportional to |

A. | f and B^{1.6}_{m} [Correct Answer] |

B. | f and B_{m} [Wrong Answer] |

C. | f^{2} and B_{m} [Wrong Answer] |

D. | f^{2} and B^{2}_{m} [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ Optical encoders most commonly used in control systems are

absolute encoders

secondary encoders

incremental encoders

none of the above

⇒ In floating point number 0110100000010101, the exponent is equal to __________

_{10}

11

-11

10

-10

⇒ Consider the following statement in FORTRAN 77

4 values could be read and stored asX (0), Y (0), X (2), Y (2)

6 values could be read and stored as X (0), Y (0), Y (2), X (3), Y (3)

none of the above

⇒ In one of the codes for transfer of numbers the code for the succeeding number differs from that of the number only in the change of a single digit. The code is

ASCII

Excess 3 CODE

Gray CODE

none of these

⇒ The circuit in figur

rectifier

voltage to frequency converter

frequency to voltage converter

logarithmic amplifier

⇒ Symbol in the given figure is IEEE symbol

AND

OR

NAND

NOR

⇒ For a reflection co-efficient of 0.5, the value of SWR is

-1

1

2

3

⇒ In a practical current source, the load current

is always equal to source current

is always less than source current

is always equal to or less than source current

cannot be higher than source current

⇒ In metals, the flow of current is due to

electrons

ions

holes

electrons and ions

⇒ Parabolic and lens antenna used at

microwave frequency

medium frequency

low frequency

high frequency

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

42857

4.0 / 2

4.0 / 2.0

4 / 2.0

⇒ With regard to a transmission line, which of the following statements is correct?

Any impedance repeats itself every 1/4 on the Smith chart.

The S.W.R. = 2 circle and the magnitude of reflection coefficient = 0.5 circle coincide on the Smith chart.

At any point on a transmission line, the current reflection coefficient is the reciprocal of the voltage reflection coefficient.

Matching eliminates the reflected wave between the source and the matching device location.

⇒ IC (instruction cycle), FC (fetch cycle) and EC (executive cycle) are related as

IC = FC - EC

IC = FC + EC

IC = FC + 2EC

EC = IC + EC

⇒ The process of extension of a single-crystal surface by growing a film in such a way that the added atoms form a continuation of the single-crystal structure is called

Ion implantation

Chemical vapour deposition

Electroplating

Epitaxy

⇒ If E

_{b}, the energy per bit of a binary digital signal is 10

^{-6}watt sec. and the one sided power spectral density of the white noise N

_{0}= 10

^{-5}W/Hz, then the output SNR of the matched filter is

26 dB

10 dB

20 dB

13 dB

⇒ Which of the following is susceptible to race condition?

R-S latch

D latch

Both R - S and D latches

None of the above

⇒ Highest value of autocorrelation function 100 sin 50 p

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50

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100

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⇒ A directional microphone gives an output of 0.5 mV whereas an omnidirectional one gives an output of 0.5 μV in the same position for the same sound pressure. The directivity of the directional microphone is

120 dB

90 dB

60 dB

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⇒ In an air cored coil, a current of 0.7 A causes a flux of 5 x 10

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5 x 10

^{-8}Wb

10

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5 x 10

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⇒ For a particular type of memory the access time and cycle time are 200 ns each. The maximum rate at which data can be accessed by

2.5 x 10

^{6}/s

5 x 10

^{6}/s

0.2 x l0

^{6}/s

10

^{6}/s

⇒ In an RLC series circuit having finite values of RLC, the phase difference between applied voltage and current is

always 0°

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always 90°

⇒ Induction wattmeter can be used in

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⇒ In a class C power amplifier the input frequency of ac signal is 1 MHz. If tank circuit has C = 1000 pF, the value of L =

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⇒ In floating point representation, the number of bits of mantissa is

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⇒ Find the Fourier transform of the half cosine pulse as shown bel

0.5 {sin

*c*[0.25(

*f*- 1)] + sin

*c*[2.5(

*f*+ 1)]}

0.5 {sin

*c*[0.5(

*f*- 1)] + sin

*c*[0.5(

*f*+ 1)]}

0.25 {sin

*c*[0.25(

*f*- 1)] + sin

*c*[0.25 (

*f*- 1)]}

0.25 {sin

*c*[0.5(

*f*- 1)] + sin

*c*[0.5(

*f*- 1)]}

⇒ The magnitude of transport lag factor is always zero.

TRUE

FALSE

⇒ Computers 'Basic input output system' is generally stored in RAM chips.

TRUE

FALSE

⇒ Fourier transform and F(

*j*ω) of a signal

*f*(

*t*) has the property

F(

*j*ω) = F(-

*j*ω)

F(

*j*ω) = -F(-

*j*ω)

F(

*j*ω) = F

^{*}(

*j*ω)

F(

*j*ω) = -F

^{*}(-

*j*ω)

⇒ The discone antenna is

a useful direction finding antenna

used as a radar receiving antenna

useful as a UHF receiving antenna

circular polarized like other circularly antenna

⇒ Which of these devices can conduct in both directions?

SCR

SUS

SBS

UJT