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Q1. | The characteristic impedance of loss less transmission line is |

A. | L/R [Wrong Answer] |

B. | L/C [Correct Answer] |

C. | 1/LC [Wrong Answer] |

D. | C/L [Wrong Answer] |

View Answer
Explanation:-
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**Also Read Similar Questions Below :**

⇒ The unit for mmf is

A

Wb

T

V

⇒ It is desired to evaluate the expression

`F = B * COS (Y) + C * SQR (COS (Y) + A * COS (Y) * COS (Y) * COS (Y)`

`F = B * COS (Y) + C * SQR [COS (Y)] + A * COS (Y) * SQR [COS (Y)]`

`F = B * COS (Y) + C * COS(Y) * COS (Y) + A * COS (Y) * COS (Y) * COS (Y)`

` X = COS(Y)`

⇒ Match the following:

List I List II A. Serial Binary adder 1. (2*n* - 1)*t*_{pd} B. Ripple carry adder 2. (*n* - 1)*t*_{pd} C. Carry look ahead binary adder 3. Operation time independent of size 4. 6*t*_{pd} for 4 bit carry look ahead adder

A-2, B-1, C-3

A-2, B-1, C-4

A-1, B-2, C-4

A-1, B-2, C-3

⇒ In figure, V_{0-1 V2 V+1 V+15 V}

⇒ The attenuation characteristics of a loaded line is similar to that of

low pass filter

high pass filter

band pass filter

band stop filter

⇒ In a series inverter

the commutating elements carry full load current

the commutating elements carry upto 50% of load current

the commutating elements do not carry load current

any of the above

⇒ Which of the following array names is invalid in Fortran 77?

B(2, 4)

B(M, 3)

B(M, R)

B(3, 6)

⇒ For plane wave propagating in free space or two conductor transmission line, what must be the relationship between the phase velocity *v*_{p} , the group velocity *v*_{g} and speed of light *c*?

*v*_{p} > *c* > *v*_{g}

*v*_{p} < *c* < *v*_{g}

*v*_{p} = *c* = *v*_{g}

*v*_{p} < *v*_{g} < *c*

⇒ Calculate the directivity of an antenna for θ_{E} = 30°, θ_{H} = 60

46

23

50

100

⇒ The two orientations of worksheet page are called

portrait and landscape

auto text and auto correct

font and footer

header and footer

⇒ According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when

the impedance of one of the networks is half that of the other

the impedance of one is the complex conjugate of the other

the impedance of one is equal to that of the other

none of the above

⇒ In sign magnitude numbers,

the leading bit stands for the sign

the leading bit is part of the magnitude

the leading bit is always 0

the leading bit is always 1

⇒ The colour on the extreme left in general purpose fixed resistors represents

first significant digit

tolerance

wattage rating

voltage rating

⇒ Which modes of circular wave guides have circular symmetry?

TE_{11}

TE_{11} and TE_{21}

TE_{01}

TE_{01} and TM_{01}

⇒ EEPROM is also known as

UVPROM

EAPROM

both UVPROM and EAPROM

none of the above

⇒ At a frequency equal to cutoff frequency in a rectangular wave guide

the flow of electromagnetic energy is zero

the flow of electromagnetic energy is infinite

the flow of electromagnetic energy is 50% of maximum

the flow of electromagnetic energy is 10% of maximum

⇒ DMA stands for

Direct Memory Address

Distributed Memory Address

Direct Memory Accumulator

Decimal Machine Address

⇒ Consider the differential amplifier shown in figure. (Assume β is very hi

2 mA

1 mA

0.5 mA

3 mA

⇒ The electrolyte in nickel cadmium cell is dilute potassium hydroxide.

TRUE

FALSE

⇒ 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

⇒ The traffic-handling capacity of an Earth station on the uplink depends on

its EIRP

satellite antenna gain

noise associated with the satellite

all of the above

⇒ The braking torque in single phase energy meter is proportional to speed of disc.

TRUE

FALSE

⇒ The property not valid for basic singularity function is

it is even signal

convolution of any arbitrary function x{t) and an impulse is the original function itself.

the sum of two impulses at same location is the impulse with the strength equal to the summation of individual strengths.

none of these.

⇒ A pulse train can be delayed by a finite number of clock periods by using

serial in-serial out shift register

parallel in serial out shift register

serial in-parallel out shift register

parallel in parallel out shift register

⇒ Contents of RAM cannot be altered.

TRUE

FALSE

⇒ 3N 200 is a

semi-conductor diode

P-N-P transistor

dual gate MOSFET

UJT

⇒ Let *f*_{1}(*t*) = G_{1}(*t*) + 4, *f*_{2}(*t*) = G_{2}(*t*) + 3. If G_{1}(*t*) and G_{2}(*t*) are uncorrected then the correlation between *f*_{1}(*t*) and *f*_{2}(*t*) are

12

7

6

zero

⇒ The *z*-transform of sequence *x*[*n*] = δ(*n*) is

1

∞

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*z*

⇒ In a BJT CE amplifier circuit the value of coupling capacitor should be such that

its reactance is small for the lowest frequency in the input and output

its reactance is high for the lowest frequency in the input and output

its reactance is zero for the lowest frequency in the input and output

its reactance is infinite for the lowest frequency in the input and output

⇒ A JFET can operate on

enhancement mode only

depletion mode only

both depletion as well as enhancement modes

neither depletion nor enhancement mode

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