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. | A compensated wattmeter has its reading corrected for error due to which one of the following parameters? |

A. | Frequency [Wrong Answer] |

B. | Friction [Wrong Answer] |

C. | Power consumed in current coil [Wrong Answer] |

D. | Power consumed in pressure coil [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss 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 :**

⇒ In figure, V

_{CC}= + 30 V, R

_{1}= 200 kΩ and R

_{2}= 100 kΩ. If V

_{BE}= 0.7 V, the voltage a cross R

_{E+20 V+19.3 V+10 V+9.3 V}

⇒ The gate electrode in the FET corresponds to the

collector in a bipolar transistor

base in a bipolar transistor

emitter in a bipolar transistor

none of the above

⇒ A memory system of size 16 k bytes is to be designed using memory chips which have 12 address lines and 4 data lines each. The number of such chips required to design the memory system is

2

4

8

18

⇒ An earth mat for a communication tower consists of

one or two radials extending from base of tower at a depth of about 5 cm below ground

a large number of radials extending from base of tower at a depth of about 3 m

a large number of radials extending from base of tower at a depth of about 30 cm

none of the above

⇒ In figure, the short circuit current through terminal AB wil

0.125

1.5 A

0.0833333333333333

0.0416666666666667

⇒ The gain of an antenna with a circular aperture of diameter 3 metres at a frequency of 5 GHz, will be

2.4674

24.674

246.74

24674

⇒ In a CRO the Y plates are oriented

horizontally

vertically

at an angle of 20° of horizontal

at an angle of 70° of horizontal

⇒ A parallel resonant circuit can be used

as a high impedance

to reject a small band of frequencies

both (a) and (b)

to amplify certain frequencies

⇒ In a sine wave, maximum rate of change of voltage occurs at

ascent of the waveform

+ ve maximum

- ve maximum

between maximum and minimum

⇒ Which of the following is susceptible to race condition?

R-S latch

D latch

Both R - S and D latches

None of the above

⇒ For telegraphy the most commonly used modulation system is

FSK

two tone modulation

PCM

single tone modulation

⇒ In pulse code modulation, if the signal is sampled at the rate of

*f*and the number of pulses in one code group is

*p*, then the number of pulses per second will be

*p*/

*f*

*f*/

*p*

1/

*pf*

*pf*

⇒ Two sinusoidal waves 1 and 2 have peak values V

_{m1}and V

_{m2}. Wave 1 is leading wave 2 by ∠θ. Which of the following is correct?

*v*

_{1}= V

_{m1}sin θ and

*v*

_{2}= V

_{m2}cos θ

*v*

_{1}= V

_{m1}sin ω

*t*and

*v*

_{2}= V

_{m2}sin (ω

*t*- θ)

*v*

_{1}= V

_{m1}sin (ω

*t*+ θ/2) and

*v*

_{2}= V

_{m2}sin ω

*t*

none of the above

⇒ Two current sources each of rms value 10 A have frequencies 40 Hz and 50 Hz respectively. They are connected in series, the expression for resultant wave is

*i*= 10 sin 40

*t*+ 10 sin 50

*t*

*i*= 14.14 sin 40

*t*+ 14.14 sin 50

*t*

*i*= 14.14 sin 80 p

*t*+ 14.14 sin 100 p

*t*

*i*= 20 sin 80 p

*t*+ 20 sin 100 p

*t*

⇒ The

*z*-transform of a particular signal is gi

casual and stable

non-casual and stable

non-casual and unstable

casual and unstable

⇒ A receiver having poor IF selectivity will also have poor

sensitivity

double spotting

blocking

all of the above

⇒ For the high-pass circuit to act as a differentiator, the time constant must be

small

very small in comparison to the time period of the input signal

very high in comparison to the time period of the input signal (that is low pass circuit)

moderate value

⇒ The intermediate frequencies in VCR are

video 38.9 MHz and audio 33.4 MHz

38.9 MHz for both video and audio

33.4 MHz for both video and audio

33.4 MHz for video and 38.9 MHz for audio

⇒ In laboratory experiment the output from reflex klystron is moderated by square wave because

it is easy to generate a square wave

crystal diode operates in square law region of

*i*-

*v*characteristics

it prevents frequency modulation

detector circuit is less complicated

⇒ Microwave signals follow the curvature of the earth and the phenomenon

tropospheric scatter

faraday effect

duct propagation

none

⇒ In figure, the curre

is 2 A from A to B

is 2 A from B to A

depends on the value of R

none of the above

⇒ The ripple factor for a bridge rectifier is

0.406

1.21

1.11

2.22

⇒ In the circuit shown in figure the current

*I*of sinusoidal sourc

25 A

0.166666666666667

20 A

Not determinable from given data

⇒ For the logic circuit of the given figure the simplified Boolean expressio

Y = AB + A C

Y = (AB) (A C)

Y = ABC

Y = A B + A C

⇒ For TM waves in a parallel plate waveguide, the minimum attenuation arising from imperfect conductors would occur at a freq. of (

*f*is the cut off frequency)

_{c}3

*f*

_{c}3

*f*

_{c}2

*f*

_{c}2

*f*

_{c}⇒ In a minimum function

the degree of numerator and denominator are equal

the degree of numerator and denominator are unequal

the degree of numerator is one more than degree of denominator

the degree of numerator is one less than degree of denominator

⇒ Current through a charging capacitor exhibits

an exponential growth function

an exponential decay function

a step decay function

a linear decay function

⇒ The charge per proton is

1.6 x 10

^{-19}C

2.6 x 10

^{-19}C

0.6 x 10

^{-19}C

1.6 x 10

^{-13}C

⇒

**Assertion (A):** The closeness of G(*j*ω) locus to (- 1 + *j*0) point can be used as a measured of margin of stability.

**Reason (R):** When the G(*j*ω) locus comes close to encircling (- 1 + *j*0) point the system becomes oscillatory.

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

R is correct but A is wrong

⇒ A line has an attenuation of 0.054 Np/m. The attenuation in decibels is

4.7 dB/m

0.47 dB/m

0.54 dB/m

5.4 dB/m