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. | In a varistor the v-i graph is linear. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct 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 N = 196, the result of the following program will be

16

16

196

⇒ For AB + A C + BC = AB + A C the dual form is

(A + B) (A + C)(B + C) = (A + B)(A + C)

(A + B ) (A + C)(B + C) = (A + B)(A + C)

(A + B) (A + C) (B + C) = (A + B) (A + C)

none of the above

⇒ In a CE amplifier

both ac and dc load lines have the same slope

the ac load line has more slope than dc load line

the ac load line has less slope than dc load line

the two load lines may have slope more than the other

⇒ With JFETs cascade means

a common source driving a common gate connection

a common gate driving a common source connection

two FETs connected in parallel

none of the above

⇒ Which of the following operation are performed on linear queues?

- Testing a linear queue for underflow
- Enqueue operation
- Dequeue operation
- Testing a linear queue for overflow.

1, 2 and 3

2, 3 and 4

1, 3 and 4

1, 2, 3 and 4

⇒ If there is phase error in the carrier signal for the detection of SSB signals, then

the output gets reduced, but a phase distortion results

the output is not reduced, but a phase distortion results

the output is not reduced, and also no distortion

the output is reduced, no phase distortion

⇒ Considerable ionization occurs between the range

50 km to 400 km

100 to 400 km

50 km to 250 km

10 to 50 km

⇒ In a 3 phase semiconverter, the firing frequency is

equal to line frequency

3 times the line frequency

6 times the line frequency

12 times the line frequency

⇒ In a 3 phase full converter, the firing angle is less than 60°. The instantaneous output voltage

will have positive part only

will have both positive and negative parts

may have both positive and negative parts

will have negative part if load is inductive

⇒ The characteristic equation of an SR flip-flop in given by

Q

_{n+1}= S + RQ

_{n}Q

_{n+1}= RQ

_{n}+ SQ

_{n}Q

_{n+1}= S + RQ

_{n}

Q

_{n+1}= S + RQ

_{n}⇒ In a four variable Karnaugh map, eight adjacent cells give a

two variable term

single variable term

three variable term

four variable term

⇒ It is found that in a telephone system 60 subscribers initiate calls during a 30 minute interval and the total duration of all the calls is 100 minutes. The load is

2

3 erlang

3.333 erlang

0.333 erlang

⇒ In a megger the controlling torque is provided by

spring

gravity

coil

eddy current

⇒ The domain mode in rectangular waveguide is

TE

_{01}

TE

_{02}

TE

_{10}

TM

_{11}

⇒ Which camera tube has highest dark current?

Plumbicon

Vidicon

Saticon

GCD imager

⇒ In a series regulated power supply circuit, the voltage gain A

_{v}, of the 'pass' transistor satisfies the condition

A

_{v}→ ∞

1 << A

_{v}< ∞

A

_{v}≈ 1

A

_{v}<< 1

⇒ Which control action can never be used alone?

Proportional

Derivative

Integral

Both (b) and (c)

⇒ The pre-emphasis circuit is used

prior to modulation

after demodulation

for low frequency components of the signal

none of the above

⇒ Lead mounting for SCR is used for

rating less than mA

rating about 1 A or less

rating of 20 A or less than 20 A

rating 100 A or less

⇒ The Laplace transform of impulse δ(

*t*) is

1

1/

*s*

*s*

1/

*s*

^{2}

⇒ Consider the following statements

- Usable bandwidth of ridge wave guide is more than that of rectangular waveguide.
- For a given value of TM
_{10}cutoff frequency the cross section of ridge wave guide is lesser that that of rect angular waveguide. - Ridge wave guide has higher conductor losser than a rectangular waveguide.
- Ridge guide has higher conductor losser than a rectangular waveguide.

1 and 2 only

1, 2 and 3 only

2 and 3 only

All

⇒ If a signal band limited for

*f*is sampled at a rate less than 2

_{m}*f*the reconstructed signal will be

_{m}smaller in amplitude

distorted

having higher frequencies suppressed

none of the above

⇒ FM has

two sidebands only

four sidebands only

eight sidebands only

infinite sidebands

⇒ In a JFET, gates are always

forward biased

reverse biased

either forward or reverse biased

unbiased

⇒ A series RLC circuit has a resonant frequency of 1000 Hz. The maximum voltage across C is likely to occur at a frequency of about

1000 Hz

2000 Hz

1025 Hz

975 Hz

⇒ A series R, L, C circuit has R = 2Ω, L = 1H, C = 1 μF. It is connected to an ac variable frequency source of peak voltage 10 V. At resonance the power supplied by the source will be

50 Ω

25 Ω

12.5 Ω

6.25 Ω

⇒ For a Gaussian process, auto-correlation also implies

statistical dependence

statistical independence

ergodic process

none of the above

⇒ A communication receiver is

TRF receiver

a superheterodyne receiver

either (a) or (b)

neither (a) nor (b)

⇒ A step up chopper can give an output voltage

higher than input voltage

lower than input voltage

both higher and lower input voltage

all of the above

⇒ Two coil have their axis perpendicular to each other. The coefficient of coupling

*k*is

1

0.5

more than 0 but less than 1

0