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Q1. | If B, H and M denote flux density, field intensity and magnetisation, B = μ_{0} (H + M). |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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**Also Read Similar Questions Below :**

⇒ In a transmission line, losses due to dielectric heating are

proportional to voltage and inversely proportional to Z

_{0}

proportional to voltage and proportional to Z

_{0}

proportional to current and proportional to Z

_{0}

proportional to current and inversely proportional to Z

_{0}

⇒ Is the interrupt-enable flag?

Low

High

Never

None

⇒ In a circular waveguide TE

_{21}mode has lowest cutoff frequency

TRUE

FALSE

⇒ How much is contributed by each bit in the code word of a PCM system under uniform and symmetric quantization to the signal to noise ratio?

3 dB

4 dB

5 dB

6 dB

⇒ Which of the following is a valid integer constant?

17

-18.58

101.14

-810

⇒ If two networks are cascaded then

[

*y*] = [

*y*

_{a}] . [

*y*

_{b}]

[Z] = [Z

_{a}] . [Z

_{b}]

[

*a*

_{a}] = [

*b*

_{b}]

[

*a*

_{a}] + [

*b*

_{b}]

⇒ The temperature coefficient of a thermistor

is positive

is negative

zero

may be positive or negative depending on its composition

⇒

Match the following:

List I (Amplifier coupling) | List II (Feature) | ||
---|---|---|---|

A. | RC | 1. | High voltage gain and impedance matching |

B. | Inductive | 2. | Ability to amplify dc and low frequency signals |

C. | Transformer | 3. | Minimum non-linear distortion |

D. | Direct | 4. | Low collector supply voltage can be used |

A-4, B-1, C-3, D-2

A-3, B-4, C-1, D-2

A-1, B-2, C-3, D-4

A-4, B-3, C-2, D-1

⇒ For addition and subtraction operations, phasors

must be represented in polar form

must be represented in rectangular form

may be represented in any form

none of the above

⇒ For the ring oscillator shown in the figure, the propagation delay of each inverter is 100 pico sec. What is the fundamental frequency of the oscillator output _______

10 MHz

100 MHz

1 GHz

2 GHz

⇒ Consider isotropic radiator radiating a power of 1 watt. At a distance of 1 metre, the power per unit area with equal

1 watt/m

^{2}

4p watt/m

^{2}

1/4p watt/m

^{2}

2p watt/m

^{2}

⇒ Choose the correct match for input resistance of various amplifier configurations shown below configurat

CB-LO, CC-MO, CE-HI

CB-LO, CC-HI, CE-MO

CB-MO, CC-HI, CE-LO

CB-HI, CC-LO, CE-MO

⇒ By what name is the equation Δ . J = 0 frequency known?

Poisson's equation

Laplace's equation

Continuity equation for steady currents

Displacement equation

⇒ The effect of lead resistance is important in measurement of

resistance of shunt

resistance of shunt winding

resistance of ammeter

both (a) and (c)

⇒ A wire is carrying current

*I*. The field intensity H at a distance

*r*from the wire

is directed towards wire

is directed away from wire

is tangential every where to a circle of radius

*r*

none of the above

⇒ Which of following digital modulation technique?

ASK

FSK

PSK

All

⇒ A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls Calculate group velocity for dominant mode.

1.8 x 10

^{8}m/sec

5 x 10

^{8}m/sec

3 x 10

^{8}m/sec

1.5 x 10

^{8}m/sec

⇒ Consider the following sys

System I has larger bandwidth and faster speed of response than System II

System II has larger bandwidth and faster speed of response than System I

System I has larger bandwidth but System II has faster speed of response

System II has larger bandwidth but System I has faster speed of response

⇒ ICs are

analog

digital

both analog and digital

mostly analog

⇒ The Boolean expression A ⊕ B is equivalent to

AB + AB

AB + AB

B

A

⇒ A semi converter operates in two quadrants.

TRUE

FALSE

⇒ Which of the following statement about the amplitude limiter is not valid?

Leak type bias must be used

Output must be tuned

The circuit is always biased in class

*C*, by virtue of the leak type bias

When the input increases past the threshold of limiting, the gain decreases to keep the output constant

⇒ A small signal source

*v*(

_{i}*t*) = A cos 20

*t*+ B sin10

^{6}

*t*is applied to a transistor amplifier as shown below. The transistor has β = 150 and

*h*= 3 kΩ. Which expression best approximates V

_{ie}_{0}(

*t<*

v

v

v

V

v

_{0}(*t*) = -1500 (A cos 20*t*+ B sin 10^{6}*t*)v

_{0}(*t*) = -150 (A cos 20*t*+ B sin 10^{6}*t*)v

_{0}(*t*) = -1500 B sin 10^{6}*t*V

_{0}(*t*) = -1500 sin 10^{6}*t*

⇒ HVDC transmission systems generally use

12 pulse converters

6 pulse converters

3 pulse converters

either 12 or 6 pulse converters

⇒ The function of duplexer in a RADAR is

to permit the use of same antenna for transmission and reception

to provide gain to the transmitted power

to amplify the received signal

both (b) and (c)

⇒ Consider the following statements Timer 555 can be used as

1 and 2

1 and 3

2 and 3

1, 2, 3

⇒ The logic realized by the circuit shown in fi

F = A ⊙ C

F = A ⊕ C

F = B ⊙ C

F = B ⊕ C

⇒ For Ergodic Process

ensemble Average equal to time Average

ensemble Average is not equal to time Average

ensemble Average > Time Average

ensemble Average < Time Average

⇒ The integral of a unit step function is

a unit impulse function

a unit pulse function

a ramp function of slope 1

none of the above

⇒ The decimal equivalent of the binary number 10110.0101011101 is

22.24082165

22.340821675

22.3408213125

22.3408203125

⇒ HVDC transmission systems generally use

12 pulse converters

6 pulse converters

3 pulse converters

either 12 or 6 pulse converters

⇒ The function of duplexer in a RADAR is

to permit the use of same antenna for transmission and reception

to provide gain to the transmitted power

to amplify the received signal

both (b) and (c)

⇒ Consider the following statements Timer 555 can be used as

- monostable multivibrator
- bistable multivibrator
- astable multivibrator

1 and 2

1 and 3

2 and 3

1, 2, 3

⇒ The logic realized by the circuit shown in fi

F = A ⊙ C

F = A ⊕ C

F = B ⊙ C

F = B ⊕ C

⇒ For Ergodic Process

ensemble Average equal to time Average

ensemble Average is not equal to time Average

ensemble Average > Time Average

ensemble Average < Time Average

⇒ The integral of a unit step function is

a unit impulse function

a unit pulse function

a ramp function of slope 1

none of the above

⇒ The decimal equivalent of the binary number 10110.0101011101 is

22.24082165

22.340821675

22.3408213125

22.3408203125