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Q1. | Material which lack permanent magnetic dipoles are known as |

A. | paramagnetic [Wrong Answer] |

B. | diamagnetic [Correct Answer] |

C. | ferromagnetic [Wrong Answer] |

D. | ferrimagnetic [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 a zero is added to a second order underdamped system

the peak overshoot is increased

the peak overshoot is decreased

the peak overshoot remains unchanged

either (a) or (b)

⇒ The subtraction of a binary number Y from another binary number X, done by adding the 2's complement of Y to X results in a binary number without overflow. This implies that the result is

-ve and is in normal form

-ve and 2's complement form

+ve and is in normal form

+ve and in 2's complement

⇒ Which one of the following statement is correct?

Satellite spacing is not affected by the bandwidth of the transmitting earth station

Beamwidth is independent of antenna size and frequency band used

The width of a beam in space is inversely proportional to the width of the transmitting antenna

Use of high-frequency bands permits less number of satellites to share the orbit

⇒ The first contribution to logic was made by

George Boole

Copernicus

Aristotle

Shannon

⇒ 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

⇒ The

*z*transform of sequence

*x*[

*n*] = {2, 4, 3, 2}

2

*z*

^{-1}+ 4

*z*

^{-2}+ 3 + 2

*z*

^{+1}

2

*z*

^{-1}+ 3 + 4

*z*

^{+1}+ + 2

*z*

^{+2}

2

*z*

^{+1}+ 3

*z*

^{-1}+ 4

*z*

^{-2}+ 2

*z*

^{-3}

3 + 2

*z*

^{-1}+ 4

*z*

^{-2}+ 2

*z*

^{-1}

⇒ The power rating of radio transmitters is around

100 mW

10 W

10 kW

10 MW

⇒ When the number of quantising levels is 16 in PCM, the number of pulses in a code group will be

3

4

8

16

⇒ A function table is required in very large numbers the memory most switched for this purpose would be

ROM

PROM

EPROM

EAROM

⇒ An RLC series circuit is underdamped. To make it overdamped, the value of R

has to be increased

has to be decreased

has to be increased to infinity

has to be reduced to zero

⇒ An

*E*transformer is a

displacement transducer

velocity transducer

acceleration transducer

pressure transducer

⇒ Two function

*g*

_{1}(

*t*) and

*g*

_{2}(

*t*) with correlation of 6 has average power of 4 and 5 respectively. The power of

*g*

_{1}(

*t*) +

*g*

_{2}(

*t*) is

9

21

3

15

⇒ Parity means the same as positive or negative number.

TRUE

FALSE

⇒ A sinusoidal carrier voltage, having frequency 1000 Hz is amplitude modulated by a sinusoidal voltage of frequency 15 kHz. The frequency of upper and lower sidebands will be

1015 kHz and 985 kHz

1030 kHz and 970 kHz

13 kHz and 17 kHz

14 kHz and 16 kHz

⇒ The equation

*v*(

*t*) = A cos [ω

*+ φ(*

_{c}t*t*)] where A and ω

_{c}are constant and φ(

*t*) is a function of base signal represents

- Phase modulation
- Amplitude modulation
- Angle modulation
- Frequency modulation

3 only

1, 3 and 4

1, 2, 3, 4

3 and 4 only

⇒ The circuit in figure will act as ideal current source with respect to terminals A and B when frequenc

0

1 rad/sec

4 rad/sec

16 rad/sec

⇒ When a circuit is excited by ac sinusoidal source, the admittance is obtained by letting

*s*=

*j*ω in Y(

*s*).

TRUE

FALSE

⇒ A forward voltage of 9 V is applied to a diode in series with a 1 kΩ load resistor. The voltage across load resistor is zero. It indicates that

diode is short circuited

diode is open circuited

resistor is open circuited

diode is either short circuited or open circuited

⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 25 MHz will be

24.09 MHz

24.54 MHz

25.45 MHz

25.91 MHz

⇒ The power to the base unit of a cordless telephone is supplied by

battery

AC mains

both battery and AC mains

either battery or AC mains

⇒ One coulomb charge is equal to the charge on

6.24 x 10

^{18}electrons

6.24 x 10

^{24}electrons

6.24 x 10

^{18}atoms

none of the above

⇒ The function of an AM detector circuit is to

rectify the input signal

discard the carrier

provide audio signal

all of the above

⇒ The units for electrochemical equivalent are

grams

grams per coulomb

gram-coulomb

grams per ampere

⇒

**Assertion (A):** For a reciprocal microwave junction the *S* matrix is symmetrical.

**Reason (R):** In a symmetrical matrix *S _{ij}* =

*S*.

_{ji}Both A and R are correct and R is correct explanation of A

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

A is correct but R is wrong

A is wrong but R is correct

⇒ Binary multiplication 1 x 0 =

1

0

10

11

⇒ Two numbers are 131 ± 5 and 629 ± 3. The sum of the numbers with range of doubt is

760 ± 8

760 ± 2

760 + 8

760 - 8

⇒ In the given circuit, V

_{1}= 40 V when R is 10 Ω. When R is zero, the value of V

_{2}wil

40 V

30 V

20 V

10 V

⇒ An open coil has

zero resistance and inductance

zero resistance and high inductance

infinite resistance and zero inductance

infinite resistance and normal inductance

⇒ When large amount of power is required, a push pull amplifier is designed for operation as

class A

class B

class C

class AB

⇒ In FM, as the modulating frequency decreases and the modulating voltage amplitude

increases, the modulation index increases

decrease, the modulation index increases

remains constant, the modulation index increases

remains constant, the modulation index decreases