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. | The magnetic field due to current I equals |

A. | I/2 pr [Correct Answer] |

B. | I/4 pr [Wrong Answer] |

C. | I^{2}/2 pr [Wrong Answer] |

D. | I^{2}/4 pr [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ DMA stands for

Direct Memory Address

Distributed Memory Address

Direct Memory Accumulator

Decimal Machine Address

⇒ In a 100 turn coil, if the flux through each turn is (

*t*

^{3}- 2

*t*)

*m*W

_{b}, the magnitude of the induced emf in the coil at a time of 4 sec is

46 mV

56 mV

4.6 V

5.6 V

⇒ The bunching action which occurs in multicavity klystron amplifier can be represented by Applegate diagram

TRUE

FALSE

⇒ Which of the following circuit can operate class AB for audio power output?

Push pull

Cascade

Pull down

Darlington pair

⇒ In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as

transmission efficiency

front to back ratio

loss coefficient

none of the above

⇒ One T state is precisely equal to one clock period.

TRUE

FALSE

⇒ Which of these has poor overload capacity?

PMMC instrument

Hot wire instrument

Dynamometer instrument

Both (a) and (c)

⇒ An unmodulated voltage 10

*V*effective is applied to a dioxide detector in which load resistance is 4 x 10

^{-5}ohms. A micrometer shows that the rectified DC current in this resistance is 30

*A*. The input resistance of the detector is

114 kW

336 kW

384 kW

455 kW

⇒ If

*f*(

_{h}*t*) is the Hilbert transform of

*f*(

*t*), and

*f*(

*t*) is a real valued signal, the pre-envelope of

*f*(

*t*) is

*f*(

*t*) -

*jf*(

_{h}*t*)

*f*(

*t*) +

*jf*(

_{h}*t*)

*f*(

_{h}*t*) +

*jf*(

*t*)

*f*(

_{h}*t*) -

*jf*(

*t*)

⇒ The maximum signal propagation time of a geosynchronous satellite transmission is about __________ millisecond.

540

270

135

1080

⇒ Negative feedback in amplifier

reduces gain

increases frequency and phase distortion

reduces bandwidth

increases noise

⇒ A minimum function has

poles and zeros on imaginary axis of

*s*plane

no poles or zeros on imaginary axis of

*s*plane

only poles but no zeros on imaginary axis of

*s*plane

only zeros but no poles on imaginary axis of

*s*plane

⇒ Find E at P(1, 1, 1) caused by four identical 3

*n*C point charges located at P

_{1}(1, 1, 0), P

_{2}(- 1, 1, 0), P

_{3}(- 1, - 1, 0) P

_{4}(1, - 1, 0)

21.58

*a*

*+ 21.58*

_{x}*a*

*+ 12*

_{y}*a*

*V/m*

_{z}6.82

*a*

*+ 6.82*

_{x}*a*

*+ 32.89*

_{y}*a*

*V/m*

_{z}-6.82

*a*- 6.82

_{x}*a*- 32.89

_{y}*a*V/m

_{z}-21.58

*a*- 21.58

_{x}*a*- 12

_{y}*az*V/m

⇒ In spread spectrum technique

a modulated signal is modulated again

a modulated signal is modulated twice again

the power of a modulated signal is increased

the noise component of a modulated signal is decreased

⇒ Consider the following statements about data structures in Pascal

- Arrays and files are types of data structures.
- List structure is not a data structure in Pascal.
- Each element of a binary tree is called a node of the tree.

All

1, and 2 only

1 and 3 only

2 and 3 only

⇒ In CE connection, the leakage current of a transistor is about

10 x 10

^{-9}A

5 x 10

^{-6}A

200 x 10

^{-6}A

5 x 10

^{-3}A

⇒ The element in the feedback circuit of a logarithmic amplifier using op-amp is

a resistor

a capacitor

an inductor

a diode

⇒ If velocity of sound waves in air at 0°C is 330 m/s, the velocity at 40°C is about

330 m/s

334 m/s

353 m/s

380 m/s

⇒ The problem of current lagging is associated with

DCTL gates

DTL gates

ECL gates

CMOS gates

⇒ For the polynomial

*P*(

*s*) =

*s*

^{5}+

*s*

^{4}+ 2

*s*

^{3}+ 2

*s*

^{2}+ 3

*s*+ 15 The number of roots which lie in the right half of the

*s*plane is :

4

2

3

1

⇒

**Assertion (A):** Impulse function is an important function in network analysis.

**Reason (R):** Convolution integral enables us to find the response of a network to an arbitary input in terms of the impulse response.

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 true, R is false

A is false, R is true

⇒ In solids the current flow is due to electrons only.

TRUE

FALSE

⇒

Match the following:

List I (Bits operator in C) | List II (Meaning) | ||
---|---|---|---|

A. | ˜ | 1. | Bitwise XOR |

B. | & | 2. | Bitwise AND |

C. | | | 3. | Bitwise OR |

D. | U | 4. | One's complement |

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

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

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

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

⇒ Q of a coil

- increases with Q increasing frequency
- varies linearly with frequency
- increase with increasing frequency because R increases at high frequency
- decrease after the peak frequency because R increases at H.F. the correct statements are

A, B

C, D

A, C

B, D

⇒ An FM transmitter delivers 80W to a load of 30 W when no modulation is present. The carrier is now frequency modulated by a single sinusoidal signal and the peak frequency deviation is so adjusted to make the amplitude of the second sideband is zero in the given out

5.12 W

21.78 W

2.56 W

16.81 W

⇒ Tesla is unit of

Φ

B

H

MMF

⇒ The number of flip flops needed for a Mod 7 counter are

7

5

3

1

⇒ In the circuit, shown the current I marked is give

2.22 A

1.78 A

4.44 A

0.0833333333333333

⇒ The coding system generally used in digital telemetry is

PPM (Pulse position modulation)

PAM (Pulse amplitude modulation)

PCM (Pulse code modulation)

PDM (Pulse duration modulation)

⇒

*n*-channel MOS is

slower than

*p*-channel MOS

faster than

*p*-channel MOS

same as

*p*-channel MOS

none of these