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 Gain margin for the system with open loop transfer functi |

A. | ∞ [Correct Answer] |

B. | 0 [Wrong Answer] |

C. | 1 [Wrong Answer] |

D. | -∞ [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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

*u*is input,

*y*is output and

*a*,

*b*are constants, the system

*y*=

*au*+

*b*

is linear

is nonlinear

may be linear or nonlinear dependig on values of

*a*and

*b*

may be linear or nonlinear depending on value of

*u*

⇒ In a dynamometer 3 phase power factor meter, the planes of the two moving coils are at

60°

0°

120°

90°

⇒ Which one of the following is an indirect way of generating FM?

Armstrong modulator

Varactor diode modulator

Reactance FET modulator

Reactance bipolar transistor modulator

⇒ 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

⇒ The effective height of a vertical radiator can be increased by

loading with lumped inductance

supporting on an insulator

capacitive loading

giving input more power

⇒ A variable resistance R and capacitive reactance X

_{C}are connected in series. As R is varied, the locus of Z is

a straight line parallel to Y axis in 4th quadrant

a straight line parallel to X axis in 4th quadrant

a straight line parallel to Y axis in second quadrant

a straight line parallel to Y axis in first quadrant

⇒ In molecules of ionic crystals, orientation polarization is zero.

TRUE

FALSE

⇒ In one's complement 8 bit representation 11111111 represents

0

0

1

-1

⇒ A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10

*n*F capacitor in the second branch. At resonance frequency, the dynamic resistance is

1 Ω

10 Ω

100 Ω

more than 100 Ω

⇒ If too large current passes through the diode

all electrons will leave

all holes will freeze

excessive heat may damage the diode

diode will emit light

⇒ Which of the following can provide two or more voice circuits with the same carrier?

SSB

Carrier reinsertion

Lincompex

Independent side band system

⇒ Which of the following is true?

During addition if the carry into and carry out of the sign bit do not match then an overflow has occurred

During addition if the carry into and carry out of the sign bit don't match then an overflow or underflow has occurred

During addition if the carry into and carry out of the sign bit match then an overflow or underflow has occurred

During addition if the carry into and carry out of the sign bit match then an overflow has occurred

⇒ In the spectrum of a frequency modulated wave

carrier frequency cannot disappear

carrier frequency vanishes when modulation index is large

the number of significant sidebands depends upon modulation index

none of the above

⇒ When a P-N junction is unbiased, the junction current at equilibrium is

zero as no charges cross the junction

zero as equal number of carriers cross the barrier

mainly due to diffusion of majority carriers

mainly due to diffusion of minority carriers

⇒ Which of the following is not an assembler directive in 8085?

D S

D B

D Q

E Q U

⇒ In 8085, F register has 8 bits.

TRUE

FALSE

⇒ If all bubbles are removed, what are the new RAM locati

(8000)

_{H}- (83FF)

_{H}

(80AA)

_{H}- (80FF)

_{H}

(FF00)

_{H}- (FFFF)

_{H}

none of the above

⇒ In the circuit, V

_{s}= 10 cos ω

*t*, power drawn by the 4Ω resistor is 8 watt. The power facto

1

0.5

0.85

0

⇒ 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

⇒

**Assertion (A):** Static RAMS are used where speed of operation is of primary concern.

**Reason (R):** Dynamic RAM has lower cost per bit than static RAM.

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 R is wrong

A is wrong R is correct

⇒ Consider the z-transform X(

*z*) = 5

*z*

^{2}+ 4

*z*

^{-1}+ 3; 0 < |

*z*| < ∞ The inverse transform

*x*[

*n*] is

5δ[

*n*+ 2] + 3δ[

*n*] + 4δ[

*n*- 1]

5δ[

*n*- 2] + 3δ[

*n*] + 4δ[

*n*+ 1]

5

*u*[

*n*+ 2] + 3

*u*[

*n*] + 4

*u*[

*n*- 1]

5

*u*[

*n*- 2] + 3

*u*[

*n*] + 4

*u*[

*n*+ 1]

⇒ Signal to noise ratio of microphone is defined as the ratio of output when the sound pressure is __________ to the output in the absence of any sound signal.

0.5 Pa

0.2 Pa

0.1 Pa

0.01 Pa

⇒ Which converters uses integrating op-amp?

Parallel A/D converter

Single slope A/D converter

Dual slope A/D converter

Both (b) and (c)

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Continuous and aperiodic | 1. | Fourier representation is continuous and aperiodic |

B. | Continuous and Periodic | 2. | Fourier representation is discrete and aperiodic |

C. | Discrete and aperiodic | 3. | Fourier representation is continuous and periodic |

D. | Discrete and periodic | 4. | Fourier representation is discrete and periodic |

A-3, B-2, C-4, D-1

A-1, B-3, C-2, D-4

A-1, B-2, C-3, D-4

A-2, B-1, C-4, D-3

⇒ If Z is the number of zeros of 1 + G(

*s*) H(

*s*) in the right half

*s*plane. N is the number of clockwise encircle elements of (-1 +

*jo*) point. P is the number of poles of G(

*s*) H(

*s*) in right half

*s*plane. The Nyquist stability criterion can be expressed as

Z = N + P

Z = P/N

Z = N - P

Z = PN

⇒ A long periodic antenna is a

frequency independent antenna

frequency dependent antenna

directional antenna

none of the above

⇒ The pole zero plot in the given figure is

non-minimum phase function

minimum phase function

all pass function

either (a) or (b)

⇒ Probability of error in DPSK is less than PSK

TRUE

FALSE

equal

depend upon noise

⇒ A balanced modulator is used in the generation of which of the following?

DSB-SC signal

FM signal

PM signal

PAM signal

⇒ Which of the following is not correct in respect of electrostatic instrument?

It is essentially a voltmeter

It is suitable for only high voltages

It has a uniform scale

It can be used for both ac and dc