Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | A balun provides an impedance transformation of |

A. | 0.667361111111111 [Wrong Answer] |

B. | 0.334027777777778 [Wrong Answer] |

C. | 0.167361111111111 [Correct Answer] |

D. | 0.0840277777777778 [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 :**

⇒ Pentavalent impurity creates

*n*type semiconductor.

TRUE

FALSE

⇒ An R-L series circuit has R = 5 Ω and L = .01 H. It is fed by ac 50 Hz supply. The rms current in the circuit is 5 A. The active power supplied by the source is

25 W

50 W

125 W

250 W

⇒ Consider the frequency modulated signal 10 cos (2p x 10

^{5}

*t*+ 5 sin (2p x 1500

*t*) + 7.5 sin (2p x 1000

*t*) with carrier frequency of 10

^{5}Hz. The modulation index is

12.5

10

7.5

5

⇒ In the circuit shown, the device connected to Y5 can have address in the r

2000 - 20FF

2D00 - 2DFF

2E00 - 2EFF

FD00 - FDFF

⇒ The number of days when Earth's shadow falls on a geosynchronous satellite is

88

277

5

10

⇒ Which of the following is used in integrated circuits?

Microstrip line

Coaxial line

Twin wire line

Shield cable

⇒ A Karnaugh map with 4 variables has

2 cells

4 cells

8 cells

16 cells

⇒ In high frequency region, an amplifier behaves like a

band pass filter

low pass filter

high pass filter

any of the above

⇒ Karnaugh map can not be drawn when the number of variables is more than 4

TRUE

FALSE

⇒ The integral of

*k*δ(

*t*) is

a step function of magnitude

*k*

a step function 'of magnitude 1/

*k*

a ramp of slope

*k*

a ramp of slope 1/

*k*

⇒ A blank EPROM has

all bits set to logical 0

all bits set to logical 1

half the total number of bits set to 0 and remaining half to logical 1

either (a) or (b)

⇒ In a transistor E mode the collector current with the transistor in cut off region is

zero

high

equal to saturated value

none of the above

⇒ A good dielectric should have

low losses

good heat conductivity

high intrinsic strength

all of the above

⇒ As compared to dimensions of most feeds, the skin depth at microwave frequencies is

of the same magnitude

much larger

much smaller

either (b) or (c)

⇒ Figure shows a Wheatstone bridge with RTD to one arm. If resistance of RTD = 1020 Ω, the voltage V

_{0}

49 mV

51 mV

48 mV

45 mV

⇒ Power gain of antenna equals directive gain in VHF and UHF range if and only if efficiency of the antenna is __________ .

0.25

0.5

0.75

1

⇒ In a rectangular waveguide

the broad width is generally labelled '

*a*' and height '

*b*'

the broad width is generally labelled '

*b*' and height '

*a*'

any one of the dimensions may be labelled '

*a*' and the other '

*b*'

the length is labelled as '

*a*'

⇒

**Assertion (A):** Ferrites are very useful at very high frequencies.

**Reason (R):** Ferrites have high permeability and high resistivity.

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

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

A is true but R is false

A is false but R is true

⇒ What is the decimal equivalent of the binary number shown in fourth row?

79

97

117

127

⇒ The slope of the transfer characteristics of an N-channel JFET is

positive

negative

constantly varying

zero

⇒ For the 8085 assembly language program given below, the content of the accumulator after the execution of the progra

00H

45H

67H

E7H

⇒ An average responding rectifier type electronic voltmeter has its scale calibrated in terms of rms value of sine wave. If 100 V peak value square wave is fed to this voltmeter, the reading will be

111 V

100 V

90.9 V

70.7 V

⇒ Which materials find application in MASER?

Diamagnetic

Paramagnetic

Ferromagnetic

Ferrimagnetic

⇒ FORTRAN expression for 3

*b*

^{2}-5

*a*

^{2}is

SQRT (3 * B ** 2 - 5 * A ** 2)

SQRT 3 * B ** 2 - 5 * A ** 2

SQRT (3 * b ** 2 - 5 * a ** 2)

SQRT (3 * B ** 2) - SQRT (5 * A **2)

⇒ In figure, the current supplied by battery immediately after switching on the circui

0.0416666666666667

0.166666666666667

0.416666666666667

0

⇒ In colour television V and U signals are

same as I and Q signal

same as R - Y and B - Y

modified I and Q signal

modified R - Y and B - Y

⇒ M circles are symmetrical with respect to

real and imaginary axis

M = 1 straight line and real axis

M = 1 straight line and imaginary axis

M = 1 straight line

⇒ Bode magnitude plot is drawn between

magnitude of network function and ω

dB magnitude and log ω

dB magnitude and ω

log

*(magnitude) and log ω*

_{e}⇒ The maximum number of AM broadcast stations that can be accommodated in a 100 kHz bandwidth for the highest modulating frequency of 5 kHz will be

100

20

10

1

⇒ A T network is inserted between source and R as shown in figure. The resistance seen by the source remains the same with or without T network when

5 Ω

10 Ω

15 Ω

20 Ω