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. | μ_{0} = 8.85 x 10^{-12}F/m. |

A. | TRUE [Correct Answer] |

B. | FALSE [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 :**

⇒ An RC snubber circuit is used to protect a thyristor against :

false triggering

failure to turn on

switching transients

failure to commutate

⇒ The hexadecimal number 'A0' has the decimal value

80

256

100

160

⇒ A sequence detector is required to give a logical output of 1 whenever the sequence 1011 is detected in the incoming pulse stream. Minimum number of flip-flops needed to built the sequence detector is

4

3

1

2

⇒ X and Y are two random variable and Z = X + Y. Let σ

_{x}^{2}, σ

_{y}^{2}and σ

_{z}^{2}be variance of X, Y and Z. Then

σ

_{z}^{2}= σ

_{x}^{2}+ σ

_{y}^{2}

σ

_{z}^{2}≤ σ

_{x}^{2}+ σ

_{y}^{2}

σ

_{z}^{2}< σ

_{x}^{2}+ σ

_{y}^{2}

σ

_{z}^{2}> σ

_{x}^{2}+ σ

_{y}^{2}

⇒ If

*f*(

*t*) = -

*f*(-

*t*) satisfies Drichlet conditions, then

*f*(

*t*) can be expanded in Fourier series containing

only sine terms

only cosine terms

cosine terms and constant

sine terms and constant

⇒ 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

⇒ A 20 m antenna gives a certain uplink gain at frequencies of 4/6 GHz. For getting same gain in the 20/30 GHz band, antenna size required is metre.

100

4

1

10

⇒ A zinc carbon cell is a primary cell.

TRUE

FALSE

⇒ Which of the following does not cause losses in optical fibre cables?

Impurities

Microbending

Attenuation in glass

Stepped index operation

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Digital counter | 1. | Measurement of harmonics |

B. | Schering Bridge | 2. | Measurement of frequency |

C. | Meggar | 3. | Measurement of loss angle of dielectric |

D. | Spectrum analyser | 4. | Measurement of insulation resistance |

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

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

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

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

⇒ A divide by 78 counter can be obtained by

6 numbers of mod-13 counters

13 numbers of mod-6 counters

one mod-13 counter followed by mod-6 counter

13 number of mod-13 counters

⇒ The efficiency of a chopper circuit is about

80% or more

around 50%

around 20%

around 5%

⇒ In terms of signum function

*sgn*(

*t*), unit step function

*u*(

*t*) =

1 +

*sgn*(

*t*)

1 -

*sgn*(

*t*)

0.5 + 0.5

*sgn*(

*t*)

0.5 - 0.5

*sgn*(

*t*)

⇒ For the discrete time system of the given fig

*y*- 0.5

_{k}*y*

_{k}_{ - 1}- 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}*y*+ 0.5

_{k}*y*

_{k}_{ - 1}- 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}*y*- 0.5

_{k}*y*

_{k}_{ - 1}+ 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}*y*+ 0.5

_{k}*y*

_{k}_{ - 1}+ 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}⇒ The number of key words in C is

4

8

16

32

⇒ The efficiency of a full wave rectifier using centre tapped transformer is twice that in full wave bridge rectifier.

TRUE

FALSE

⇒ Which of the following binary product is incorrect?

1100 x 1010 = 1111000

1.01 x 10.1 = 11.001

1100110 x 1000 = 1100110000

None of the above

⇒ The instruction

`MOV `*r*_{1}, *r*_{2}

in 8085causes contents of registers

*r*

_{2}to be moved to

*r*, and uses register addressing

causes contents of registers

*r*

_{1}to be moved to

*r*

_{2}and uses register addressing

causes contents of registers

*r*

_{1}to be moved to

*r*

_{2}and uses register immediate addressing

causes contents of registers

*r*

_{2}to be moved to

*r*

_{1}and uses register immediate addressing

⇒ 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

⇒ When a power diode is conducting, the voltage drop across it is about

I V

5 V

20 V

50 V

⇒ Computer ICs work reliably because

they are based on two state design

these are made from pure silicon

these are maintained at two temperatures

none of the above

⇒ A remote control for TV uses

LED in receiver and photodiode in transmitter

LED in transmitter and photodiode in receiver

LED in both transmitter and receiver

Photodiode in both transmitter and receiver

⇒ If

*e*is the charge of an electron, R is the radius of its orbit and ω is the angular velocity of electron, the magnetic dipole moment μ

_{m}of the orbit is |μ

_{m}| =

*e*ωR

^{2}.

TRUE

FALSE

⇒ Ohmic range of carbon composition resistors is

10 to 100 ohms

10 to 10 K ohms

10 to 200 ohms

10 to 25 M ohms

⇒ In a CRO, the time base signal is applied to

X plates

Y plates

either X or Y plates

alternately X and Y plates

⇒ A boot strap generally incorporates

CB configuration

CE configuration

emitter follower

none of the above

⇒ Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike?

Dust particles may not accumulate

Charge per unit area becomes very high for lightening to discharge

Rain drops may not collect

None of the above

⇒ In two level logic, logic race does not occur.

TRUE

FALSE

⇒ Which of the following correctly declares a pointer to an array of intergers in C?

int * P [20]

int * P

int (* P) [20]

int * (P [20])

⇒ If the ratio of ac to dc load impedance of a diode detector is low, the result will be

poor AGC operation

poor AF response

negative peak clipping

diagonal clipping