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. | While drawing vector diagram for a series circuit, the reference vector is |

A. | voltage [Wrong Answer] |

B. | current [Correct Answer] |

C. | power [Wrong Answer] |

D. | phase angle [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 :**

⇒ The two orientations of worksheet page are called

portrait and landscape

auto text and auto correct

font and footer

header and footer

⇒ Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after ACI 0 A4 H?

4 AH, 0

4 AH, 1

4 BH, 0

4 BH, 1

⇒ Frequency domain of a periodic triangular function is a

discrete sinc function

continuous sampling function

discrete sampling function

continuous sampling square function

⇒ In the FM wave described by equation

*v*= 15 sin (4 x 10

^{8}

*t*+ 3 sin 1100

*t*), the carrier frequency and signal frequency respectively are

63.66 MHz and 175 Hz

4 x 10

^{8}Hz and 1100 Hz

175 Hz and 63.66 MHz

1100 Hz and 4 x 10

^{8}Hz

⇒ Symbol shown in figure represen

Enhancement only N-channel MOSFET

UJT with

*p*-type base

N-channel DMOSFET with internal protection

Phototransistor

⇒ The tuned circuit of the oscillator in a simple AM transmitter employs a 50 H coil and a 1 nanofarad capacitor. If the oscillator output is the carrier frequency will be

448 kHz

555 kHz

625 kHz

712 kHz

⇒ A dielectric should have poor heat conductivity.

TRUE

FALSE

⇒ At corner frequency the phase angle of factor 1/(1 +

*j*ωT) is

+90°

-90°

+45°

-45°

⇒ A short grounded vertical antenna has a length L which is 0.05λ at frequency

*f*. If its radiation resistance at

*f*is R ohms, then its radiation resistance at a frequency 2

*f*will be

R/2Ω

RΩ

2RΩ

4RΩ

⇒ The Laplace transform of a unit step function is

1

1 /

*s*

*s*

1 /

*s*

^{2}

⇒ Consider the following statements about mutual inductances:

- The value should remain constant under all conditions.
- The mutual inductance should not vary with temperature.
- The inductance should be independent of excitation.
- They have two coils wound on a bobbin of hard magnetic material, coils being separated by a range.

2, 3, 4

1, 2, 3

1, 3, 4

1, 2, 4

⇒ Consider the following Statements regarding resistance strain gauge

- The gauge factor is in the range of 2 to 5.
- The resistance changes due to change in specific resistance with strain.
- The resistance increases with increase in temperature.

1, 2, 3

1 and 2

2 and 3

1 and 3

⇒ A sinusoidal signal with peak to peak amplitude of 1.536 volt is quantized into 128 levels using a mid-rise uniform quantizer. The quantization noise power is

0.768 V

48 x 10

^{-6}V

12 x 10

^{-6}V

3.072 Volt

⇒ The maximum range of a transmitter depends on

its frequency

its power

both its frequency and power

none of the above

⇒ The range of a cordless telephone is about

1000 m

500 m

100 m

10 m

⇒ In a N-P-N transistor of the emitter junction is reverse biased and collector junction is also reversed biased, the transistor will operate in

active region

saturation region

cut-off region

inverted region

⇒ Time delay of a TTL standard family is about

180 ns

50 ns

18 ns

3 ns

⇒ For a directional coupler the power is in the ratio of

40 dB

30 dB

20 dB

10 dB

⇒ In a oscillator, a sine wave generator starts at

*t*= 0. It consist of

Pure sine wave

Pure cosine wave

Unity for

*t*> 0

2∪(

*t*) - 1

⇒ The phase difference (

*j*ω -

*p*

_{1}) means

phasor drawn from

*p*

_{1}to

*j*ω

phasor drawn from origin to

*p*

_{1}

phasor directed from origin to

*j*ω point

phasor directed from

*j*ω to

*p*

_{1}

⇒ 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}

⇒ An electron for which

*l*= 0 has zero orbital magnetic dipole moment.

TRUE

FALSE

⇒ A FET

has two P-N junctions

has three P-N junctions

depends on the variation of the depletion layer width with reverse voltage, for its operation

depends on the variation of a magnetic field for its operation

⇒ In the circuit of figure the current through C at

*t*= &infin

0.166666666666667

2.5 A

3.1 A

0

⇒

**Assertion (A):** The duty cycle of a class C amplifier affects the power dissipation of transistor

**Reason (R):** At higher harmonics the efficiency of a class C amplifier becomes poor

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

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

A is correct R is wrong

A is wrong R is correct

⇒ If modulus is less than 2

^{N}, some states of the counter are skipped by using NAND gates.

TRUE

FALSE

⇒ In 2's complement representation the number 11100101 represents the decimal number

37

-31

27

-27

⇒ Which is correct for a vacuum triode?

μ =

*r*

_{p}

*g*

_{m}

*r*

_{p}= μ

*g*

_{m}

*g*

_{m}= μ

*r*

_{p}

*r*

_{p}

*g*

_{m}

⇒ For real and odd signals, the Fourier series coefficient

*a*is __________ .

_{k}purely imaginary and even

purely real and even

purely imaginary and odd

purely real and odd

⇒ The function (

*s*+ 2) (

*s*+ 4)/[(

*s*+ 1)(

*s*+ 3)]

is a reactance function

is an RC function

may be a reactance function or an RC function

may be RC function or an RL function