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Q1. | Damping ratio = |

A. | actual resistance/critical resistance [Correct Answer] |

B. | critical resistance/actual resistance [Wrong Answer] |

C. | critical resistance [Wrong Answer] |

D. | none of the above [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 :**

⇒ As B is increased from zero to about 2T, μ

_{r}, of a ferromagnetic material

increase

decrease

first increases then decreases

remains the same

⇒ Which of the following can be used as a buffer amplifier?

CE

CC

CB

Both (a) and (c)

⇒ In 8085 microprocessor, how many interrupt control lines are there?

6

8

12

16

⇒ Which of the following algorithms design techniques is used in quick sort algorithm?

Dynamic programming

Backtracking

Divide and conquer

Greedy

⇒ In the full adder, denoting Sum by S and carry by C

S = 1 when two or more inputs are unity

C = 1 when two or more inputs are unity

C = 1 when all the inputs are unity

S = 1 when all the inputs are unity

⇒ In the given figure, the number of individual loop

2

4

5

6

⇒ The power dissipation in a transistor is the product of

emitter current and emitter to base voltage

emitter current and collector to emitter voltage

collector current and collector to emitter voltage

none of the above

⇒ A generator of 50 Ω internal impedance and operating at 1 GHz feeds a 75 Ω load via a coaxial line of characteristic impedance 50 Ω. The VSWR on the feed line is

0.5

1.5

2.5

1.75

⇒ Narrowband FM signal can be considered to be equal to

PM

AM

SSB

DSB

⇒ The number of possible colours with a 4 line digital input monitor are

4

16

64

2

⇒ The current wave of figure, is passed through a 3 H inductor during the period 0 to 2 sec

is 3 V

is 6 V

increases from 0 at

*t*= 0 to 6 V at

*t*= 2 seconds

increases from 0 at

*t*= 0 to 6 V at

*t*= 2 seconds and then decreases

⇒ For a 16 bit computer the range of integer constants in C is

-32768 to + 32767

-32767 to + 32768

-65536 to + 65535

-65535 to + 65536

⇒ 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

⇒ Consider the following features:

- negative operands cannot be used
- when immediate operand changes, the program should be reassembled
- the program is difficult to read
- the size of operand is restricted by word length of the computer

1 and 2

2 and 4

2 and 3

1 and 4

⇒ For a message signal

*m*(

*t*) = cos (2p

*f*) and the carrier frequency

_{m}t*f*, which of the following represents a single side band (SSB) signal?

_{c}cos (2p

*f*) cos (2p

_{m}t*f*)

_{c}tcos (2p

*f*)

_{c}tcos [2p(

*f*+

_{c}*f*) t]

_{m}[1 + cos (2p

*f*) cos (2p

_{m}t*f*)]

_{c}t⇒ A discrete zero memory information source has 40 symbols and each symbol is equally likely. The minimum number of bits required to code the source with uniform length code and entropy of the source are

5 and 5.03

6 and 5.83

5 and 6.64

6 and 5.32

⇒ The function δ (

*t*-

*b*) is a

unit impulse

unit step

unit doublet

none of the above

⇒ DC ampere hour meter is an indicating instrument.

TRUE

FALSE

⇒ End fire array is called a linear resonant dipole array.

TRUE

FALSE

⇒ The PCM signal shown below uses amplitude level of +1 volt and -1 volt to represent binary symbol 0 and 1 respectively. Each code word consists of 4 bits. The sampled version of analog signal from which this PCM signal is derived

EB596

CD231

DA495

25B6A

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

Y = (A + B) (C + D) (E + F)

Y = A = B + C + D + E + F

ABCDEF

ABC + DEF

⇒

Match the following:

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

A. | RC coupled amplifier | 1. | Very low drift |

B. | Tuned amplifier | 2. | Flat frequency response from zero frequency onwards |

C. | Chopper stabilized amplifier | 3. | Flat frequency response with upper and lower cut off frequency |

D. | DC amplifier | 4. | Peak in gain frequency response |

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

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

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

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

⇒ Which of the following is used for generating time varying wave forms?

MOSFET

PIN diode

Tunnel diode

UJT

⇒ Which of the following statement is correct?

Decimal 9 is represented as 1011 in Excess-3 code

Decimal 9 is represented as 1001 is BCD code

Decimal 10 is represented as 1100 is Gray code

Decimal 10 is represented as 1001 in binary code

⇒ In

*n*channel JFET

I

_{D}and V

_{DS}are positive but V

_{GS}is negative

I

_{D}and V

_{GS}are positive but V

_{DS}is negative

V

_{DS}and V

_{GS}are positive but I

_{D}is negative

I

_{D}, V

_{DS}and V

_{GS}are all positive

⇒ As compared to their values in free space

velocity of electric wave in dielectric is smaller but wave length of electric wave is more

both velocity and wave length of electric wave in dielectric are higher

both velocity and wave length of electric wave in dielectric are smaller

wave length of electric wave is less but velocity is more in dielectric

⇒ A thyristor has a turn on time of 6 μs. If the anode circuit is inductive, the turn on time will be

6 μs

less than 6μs

more than 6 μs

either 6 μs or less

⇒ CE mode input V-I characteristic can be shown by a plot of

V

_{BE}versus

*i*

_{B}for constant values of V

_{CE}

V

_{CB}versus

*i*

_{C}for constant values of I

_{E}

V

_{CE}versus

*i*

_{E}for constant values of V

_{EB}

V

_{CE}versus

*i*

_{E}for constant values of V

_{CE}

⇒ The output

*y*(

*t*) of a linear time invariant system is related to its input

*x*(

*t*) by the following equation

*y*(

*t*) = 0.5

*x*(

*t*-

*t*

*+ 1) +*

_{d}*x*(

*t*-

*t*

*) + 0.5*

_{d}*x*(

*t*-

*t*

*+ 7). The filter transfer function*

_{d}*H*(ω) of such a system is given by

(1 + cos ωt)

*e*

^{-jωt}

*d*

(1 + 0.5 cos ωt)

*e*

^{-jωt}

*d*

(1 + cos ωt)

*e*

^{jωt}

*d*

(1 - 0.5 cos ωt)

*e*

^{-jωt}

*d*

⇒ Which one of the following pairs is not correctly matched?

NaCl : Diamagnetic

Gd : Paramagnetic

Ferrite : Ferrimagnetic

Cr

_{2}O

_{3}: Ferromagnetic