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 wave E cos (b_{m}x - ωt) is a backward wave. |

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 :**

⇒

**Assertion (A):** The polynomial *s*^{3} + 6*s*^{2} + 12*s* + 8 is Hurwitz.

**Reason (R):** In a Hurwitz polynomial all coefficients are non-negative.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ To measure moisture in wood, the most suitable method is

electric conduction

electrical-capacitive

absorption of radiation

equilibrium-moisture Vs humidity

⇒ Negative feedback in amplifier

reduces gain

increases frequency and phase distortion

reduces bandwidth

increases noise

⇒ In common base configuration, the input characteristics of bipolar junction transistor are drawn between

V

_{EB}and I

_{E}

V

_{CB}and I

_{C}

I

_{C}and V

_{CE}

I

_{E}and V

_{CE}

⇒ 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

⇒ The fourier transform of a voltage signal

*x*(

*t*) is X(

*f*). The unit of X(

*f*) is __________ .

volts

volt

^{2}

volt/sec

volt-sec

⇒ During transmission over a communication channel, bit errors occur independently with probability P. If a block of

*n*bits is transmitted, the probability of at most one bit error is equal to

1 - (1 - P)

^{n}

P + (

*n*- 1) (1 - P)

*n*P (1 - P)

^{n - 1}

(1 - P)

^{n}+

*n*P (1 - P)

^{n - 1}

⇒ In magnetic film memory, the memory element consits of

plated wires

superconductive material

nickel iron alloy

doped aluminium

⇒ For a given voltage four heating coils will give maximum heat when connected

in parallel

in series

with two parallel pairs in series

with one pair in parallel and the other two in series

⇒ The register set and instruction set of 8088 is similar to that of

8085

8086

partly 8085 and partly 8086

none of the above

⇒ A microcomputer has memory locations from 0000 to FFFF, each storing 1 byte. How many bytes can be the memory store?

12333

14666

16384

16655

⇒ A single phase energy meter operates on induction principle.

TRUE

FALSE

⇒ When one operand is real and one integer in Pascal, which of the following operations are not allowed?

+ and -

*

/

Div and Mod

⇒ In a display specified as 600 x 400 the number of pixels across the display screen is

600

400

240000

either (a) or (b)

⇒ Figure shows a chopper feeding RLE load, The free wheeling diode conducts w

thyristor is on

thyristor is off

both when thyristor is on and thyristor is off

partly when thyristor is off and partly when thyristor is on

⇒ The effective length of antenna is different from actual length due to

top loading

end effects

both (a) and (b)

none of the above

⇒ Examine the following statements

- A small size hydraulic actuator can develop good torque.
- It is easy to maintain a hydraulic system leak proof.
- Both linear and rotatary hydraulic actuators are available.
- Hydraulic power is more easily available than electric power.

all

1 and 2 only

1 and 3 only

2, 3 and 4 only

⇒ Addition of a small amount of antimony to germanium will result in

formation of P-type semiconductor

more free electrons than holes in the semiconductor

antimony concentrating on the edges of the crystals

increased resistance

⇒ In 8085 microprocessor, what is the length of A-register?

6 bits

8 bits

12 bits

16 bits

⇒ Which of the following is an indirect method of generating FM?

Reactance BJT modulator

Armstrong modulation

Varactor diode modulation

Reactive FM modulator

⇒ The power factor of a single phase load can be calculated if instruments available are

one voltmeter, one ammeter

two ammeters

two voltmeters

one voltmeter, one ammeter and one wattmeter

⇒ The Hilbert transform of cos ω

_{1}

*t*+ sin ω

_{2}

*t*is

sin ω

_{1}

*t*+ cos ω

_{2}

*t*

sin ω

_{1}

*t*- cos ω

_{2}

*t*

cos ω

_{1}

*t*- cos ω

_{2}

*t*

sin ω

_{1}

*t*+ sin ω

_{2}

*t*

⇒ Choose the correct match for input resistance of various amplifier configurations shown below configurat

CB-LO, CC-MO, CE-HI

CB-LO, CC-HI, CE-MO

CB-MO, CC-HI, CE-LO

CB-HI, CC-LO, CE-MO

⇒ Ferrites are

hard materials

brittle materials

not easily machinable

materials with all above properties

⇒ The equation ∇ . J = 0 is called

Poisson's equation

Kirchoff's node equation

Continuity equation for static currents

Continuity equation for sampling currents

⇒ Consider the following statements

- Tellegen's theorem is applicable to any lumped network.
- Reciprocity theorem is applicable to linear bilateral network.
- Thevenin theorem is applicable to two terminal linear active network.
- Norton's theorem is applicable to linear active network.

1, 2 and 3

1, 2, 3 and 4

1, 2 and 4

3 and 4

⇒ Consider the following expression for the driving point imped

2 and 4

1 and 3

1 and 4

2 and 3

⇒ The two conductors of a single phase transmission line suspended in air carry currents in opposite directions. The force per unit length on each conductor varies

directly as the current in either conductor

directly as the distance between the two conductors

directly as the square of the current in either conductor

inversely as the square of the distance between the two conductors

⇒ In a power diode the reverse recovery time is the time from the instant the forward current is zero to the instant when reverse recovery current has decayed to

50% of peak reverse current

25% of peak reverse current

10% of peak reverse current

zero value

⇒ Symbol shown in figure represen

P-channel DEMOSFET

N-channel DEMOSFET

UJT with N-type base

UJT with P-type base