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. | The waveguides compared to equivalent transmission lines at low frequency are |

A. | able to carry more power [Wrong Answer] |

B. | less noisy [Wrong Answer] |

C. | having lower attenuation [Wrong Answer] |

D. | all of the above [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 :**

⇒ Which of the following statements regarding two transistor model of

*p*-

*n*-

*n*-

*p*device is correct?

It explain only the turn on portion of the device characteristics

It explain only the turn off portion of the device characteristics

It explain only the negative region portion of the device characteristics

It explain all the regions of the device characteristics

⇒ A lossless transmission line with air dielectric is 6 m long. what is the phase constant?

1p rad/m

2p rad/m

0.2p rad/m

0.1p rad/m

⇒ A constant

*k*low pass T section filter has a characteristic impedance of 600 p at zero frequency. At

*f*=

*f*

_{c}the characteristic impedance is

600 Ω

zero

infinite

more than 600 ohms

⇒ Which of the following is a valid logical expression in Pascal?

2.5 : = A

(A + B) < < (C + D)

A = < B

A > = B

⇒

**Assertion (A):** A 3 phase wattmeter consists of two wattmeters mounted in one case.

**Reason (R):** Power measurement in a 3 phase circuit can be conveniently done by two wattmeter method.

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

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

A is true R is false

A is false R is true

⇒ According to maximum power transfer theorem, if the load is inductive, the source should be

inductive

capacitive

resistive

any of the above

⇒ The sum S of A and B in a Half Adder can be implemented by using K NAND gates. The value of K is

3

4

5

none of these

⇒ A unipole is also known as

omnidirectional radiator

unidirectional radiator

line radiator

none of the above

⇒ In a single phase cycloconverter with centre tapped transformer

all thyristors carry currents for equal duration

the durations of currents in all thyristors may or may not be equal

the durations of currents in all thyristors cannot be equal

the duration of currents in all thyristors must be equal for satisfactory operation

⇒ A differentiating amplifier has capacitor in the input path.

TRUE

FALSE

⇒ In the graph shown in the figure, for the tree with branches

*b*,

*d*and

*f*the fundamental loops would inclu

*abf, def, bdea*

*bdc, def, fba*

*abde, def, cdb*

*cea, bdea, abbf*

⇒ In load commutated chopper, the commutating element

is capacitor

is capacitor and inductor

is capacitor, inductor and auxiliary thyristor

any of the above depending on load

⇒ Tesla is unit of

Φ

B

H

MMF

⇒ For addition and subtraction operations, phasors

must be represented in polar form

must be represented in rectangular form

may be represented in any form

none of the above

⇒ Harmonic distortion analyser

measures amplitude of each harmonic

measures rms value of fundamental frequency component

measures rms value of all harmonics except fundamental frequency

displays rms value of each harmonic on screen of CRO

⇒ Waveform shown in figure is that

FM

PCM

AM-DSB

AM-SSB

⇒ If a driving point function N(

*s*) =

*p*(

*s*)/

*q*(

*s*), then

the degree of

*p*(

*s*) and

*q*(

*s*) may differ by one only

the degree of

*p*(

*s*) and

*q*(

*s*) may differ by zero only

the degrees of

*p*(

*s*) and

*q*(

*s*) be equal

the degrees of

*p*(

*s*) and

*q*(

*s*) must not be equal

⇒ The bandwidth required for amplitude modulation is

half the frequency of modulating signal

equal to the frequency of modulating signal

twice the frequency of modulating signal

four times the frequency of modulating signal

⇒ A UJT exhibits negative resistance characteristics when

Current is less than valley current

Current is less than peak current

Current is more than peak current but less than valley current

None of the above

⇒ If V

_{r}is the reverse voltage across a graded P-N Junction, then the junction capacitance

*c*

_{j}is proportional to

(V

_{r})

^{2}

(V

_{r})

^{n}

(V

_{r})

^{-n}

(V

_{r})

^{3/2}

⇒ Digital technologies being used now-a-days are

DTL and EMOS

TTL, ECL, CMOS and RTL

TTL, ECL and CMOS

TTL, ECL. CMOS and DTL

⇒ In the given figure

A

B

A + B + C

ABC

⇒ In a bridge inverter with single pulse width modulation

the output frequency is equal to frequency of reference signal

the output frequency is equal to frequency of control signal

either (a) or (b)

neither (a) nor (b)

⇒ In a metal, the valence electrons

are not shared

are shared only between neighbouring atoms

are shared by all atoms

either (b) or (c)

⇒ In graphical analysis of BJT amplifier the slope of ac line is more than that of dc load line.

TRUE

FALSE

⇒ For the minterm designation Y = ∑ m (1, 3, 5, 7) the complete expression is

Y = A BC + A B C

Y = A B C + A B C + ABC + A BC

Y = A B C + A B C + ABC + A BC

Y = A B C + ABC + A BC + A BC

⇒ The logic realized by the circuit shown in figure belo

F = A - C

F = A + C

F = B ⊙ C

F = B ⊕ C

⇒ An ohmmeter is a

moving coil instrument

moving iron instrument

dynamometer instrument

induction instrument

⇒ A conditionally stable system is stable for the value of gain between two critical values. It is unstable if

the gain is increased beyond upper critical value

the gain is decreased below lower critical value

both (a) and (b)

none of the above

⇒ When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is

symmetrical about the carrier

not necessarily symmetrical about the carrier

decided by the predominant sidebands

none of the above