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. | With respect to transmission parameters, which one of the following is correct? |

A. | A and B are dimensionless [Wrong Answer] |

B. | B and C are dimensionless [Wrong Answer] |

C. | A and D are dimensionless [Correct Answer] |

D. | B and D are dimensionless [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 :**

⇒ If F(

*j*ω) is the Fourier transform of

*f*(

*t*), then

£

*f*(-

*t*) = F(

*j*ω)

£

*f*(-

*t*) = F* (

*j*ω)

£

*f*(-

*t*) = F(-

*j*ω)

£

*f*(-

*t*) = F* (

*- j*ω)

⇒ The response shown in figur

over damped

critically damped

under damped

either (a) or (c)

⇒ Which of the following statement regarding link loss for a satellite is wrong?

For fixed antenna, it is inversely proportional to

*f*

^{2}

For fixed frequency, it is inversely proportional to the product of the antenna aperture areas

For a given satellite operating at a given frequency, it is inversely proportional to

Loss in down-link is negligible as compared to that in uplink

⇒ When a source is delivering maximum power to a load through a network, the ratio of power delivered to the source power

may be 50% or less than 50%

is 50%

may be 50% or more than 50%

may be 50% or more less than 50%

⇒ A sinusoidal ac voltage of amplitude 100 V is applied to a rectifying device which offers 10 Ω resistance in forward direction and infinite resistance in backward direction. A moving coil ammeter is also connected in the circuit. The reading of ammeter will be

0.416666666666667

0.208333333333333

3.185 A

14.14 A

⇒ Decimal 45.15 when converted into 9's complement will become

54.84

45.48

48.54

45.84

⇒ The phase velocity of an EM wave propagating in a hollow metallic rectangular waveguide in the TE

_{10}mode is

equal to its group velocity

less than the velocity of light in free space

equal to the velocity of light in free space

greater than the velocity of light in free space

⇒ Which of the following real expressions is correct in Pascal?

`- Z + P * X `

`(X + Y) (A + B)`

`Z ** M `

`Z P * M`

⇒ The ac collector current is nearly equal to

ac base current

ac signal current

ac supply current

ac emitter current

⇒ If

*f*(-

*t*) =

*f*(

*t*), the function

*f*(

*t*) has only cosine terms.

TRUE

FALSE

⇒ Which TM mode in rectangular waveguide has lowest cutoff frequency?

TM

_{11}

TM

_{01}

TM

_{10}

TM

_{21}

⇒ Harmonic distortion analyser

measures amplitude of each harmonic

measures rms value of fundamental frequency component

measures rms value of all harmonics except fundamental frequency

displays rms value of each harmonic on screen of CRO

⇒ A series resonant circuit is fed by a voltage having rms value V. At resonance, the voltage across inductance V

_{L}and voltage across capacitance V

_{C}are related as

V

_{L}> V

_{C}

V

_{L}< V

_{C}

V

_{L}= V

_{C}

V

_{L}= 0.5 V

_{C}

⇒ Which of the following is used in lightning arresters?

Thermistor

Photoconductor

Transistor

Varistor

⇒ The signal input to a given amplifier is made up of 100 mΩ signal power and 1 mΩ noise power. The amplifier contributes an additional 100 mΩ of noise and has a power gain of 20 dB. The output signal-to-noise ratio is

100

50

10

5

⇒ In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

assignment, relational, arithmetic

relational, assignment, arithmetic

arithmetic, assignment, relational

arithmetic, relational, assignment

⇒ Two impedances are connected in series. Three voltmeters are connected, one across each impedance and one across combination. The readings of all the three are equal. The phase angle between voltages across the two impedances is

30°

60°

90°

120°

⇒

**Assertion (A):** A transistor requires a continuous base signal for conduction but a thyristor requires a gate pulse.

**Reason (R):** Transistor find widespread application in power electronic circuits.

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

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

A is correct but R is wrong

A is wrong but R is correct

⇒ Between which regions does BJT act like switch?

Cut off and saturation

Cut off and forward active

Forward active and cut off

Saturation and active

⇒ The dual of a loop is

twig

node pan

mesh

tree

⇒ In a semiconductor material. The hole concentration is found to be 2 x 2.5 x 10

^{15}

*cm*

^{-3}. If mobility of carriers is 0.13

*m*

^{2}/

*v-s*. Then find the current density if electric field intensity is 3.62 x 10

^{-19}

7.6237 x 10

^{-4}A/

*cm*

^{2}

7.6237 x 10

^{-5}A/

*cm*

^{2}

7.6237 x 10

^{-3}A/

*cm*

^{2}

none of these

⇒ For representing two sinusoidal voltages on a phasor diagram

Both voltages must be of the same frequency

Both voltages must be sinusoidal but may be of different frequencies

One of the voltages must be of 50 Hz

The frequency of one must be integral of that of other

⇒ If resistance is 20 Ω and inductance is 2 H in a R-L series circuit, then time constant of this will be

0.001

*s*

0.1

*s*

10

*s*

100

*s*

⇒ In a line VSWR of a load is 6 dB. The reflection coefficient will be

0.033

0.33

0.66

3.3

⇒ A carrier is simultaneously modulated by two sine waves having modulation indices of 0.4 and 0.3. The total modulation index will be

0.1

0.7

0.5

0.35

⇒ An oscillator at 4.2 MHz is followed by two frequency doublers and two triplers. The output frequency will be

84 MHz

112.4 MHz

151.2 MHz

303.4 MHz

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

always 0°

between 0 and 180°

between 0 and 90°

always 90°

⇒ Which of the following READ statements is correct in FORTRAN 77?

`READ *, HONEY (I), I = 1, 5 `

`READ *, (HONEY (I), I = 1, 5)`

`READ * HONEY I, I = 1, 5`

`READ HONEY I, I = 1, 5`

⇒ Consider the draw backs

- Slope overload
- Serration noise
- Granular noise

1 and 2 only

2 and 3 only

1 and 3 only

1, 2, 3

⇒ The total number of pulses in a TV remote control is

14

12

10

8