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. | For a series R-L-C circuit, the characteristic equation is given |

A. | critically damped [Wrong Answer] |

B. | underdamped [Correct Answer] |

C. | undamped [Wrong Answer] |

D. | overdamped [Wrong 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 :**

⇒ Double integration of a unit step function would lead to

an impulse

a parabola

a ramp

a doublet

⇒ The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is

-256

-128

-255

-127

⇒ The temperature below which certain materials are antiferromagnetic and above which they are paramagnetic is called

Weiss temperature

Curie temperature

Neel temperature

None of the above

⇒ The following circuit is implementation of

- Sum of full adder
- Carry of half adder
- Difference of full subtractor <

(i) only

(iii) only

(ii) only

(i) and (ii)

⇒ In which one of the following types of analog to digital convertors the conversion time is practically independent of the amplitude of the analog signal?

The dual slope integrating type

Successive approximation type

Counter ramp type

Tracking type

⇒ The electrolyte in nickel cadmium cell is dilute potassium hydroxide.

TRUE

FALSE

⇒ A hertzian dipole has a radiation pattern with

a null in the direction of the dipole

a null in the plane perpendicular to the dipole

a peak in the direction of the dipole

none of the above

⇒ In which mode of BJT operation are both junctions forward biased?

Active

Saturation

Cut off

Reverse active

⇒ As per Euler's identity

*e*

^{jωt}= cos ω

*t*+

*j*sin ω

*t*

TRUE

FALSE

⇒ The modulation index of an FM is changed from 0 to 1. How does the transmitted power change?

Gets halved

Gets doubled

Gets increased by 50 percent

Remains unchanged

⇒ The voltage of the source in circuit shown __________ if

*i*(

*t*) = - 20

*e*

^{-2t46.6 e-2t47 e-2t50 e-2t0}

⇒ The current due to thermionic emission is given by Richardson Dushman equation.

TRUE

FALSE

⇒ A 4 cm by 3 cm rectangular waveguide with air cavity, is operating at 12 GHz with TE

_{11}mode. The cut-off frequency is:

6.25 GHz

4.75 GHz

1.5 GHz

8.75 GHz

⇒ A function Z(

*s*) has zero at infinity if

the degree of numerator and denominator are equal

the numerator of Z(

*s*) is one degree higher than denominator

the denominator of Z(

*s*) is one degree higher than numerator

the degree of numerator and denominator are either equal or differ by one

⇒

Match the following:

List I (Instrument) | List II (Measured quantity) | ||
---|---|---|---|

A. | Hot wire | 1. | only voltage |

B. | PMMC | 2. | phase |

C. | Electrostatic | 3. | true RMS value |

D. | Lock in Amplifier | 4. | dc value |

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

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

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

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

⇒ As per Shannon-Hartley theorem, a noise less Gaussian channel has

zero capacity

infinite capacity

small capacity

none of the above

⇒ As temperature increases the forbidden gap in silicon increases.

TRUE

FALSE

⇒ In a receiver, which of the following device has RF input but IF output?

Loudspeaker

Frequency changer

Demodulator

Audio amplifier

⇒ The seven bit Hamming code received is 0010001. If even parity has been used, the correct code is

10001

1110001

110001

11001

⇒ The subtraction of a binary number Y from another binary number X, done by adding the 2's complement of Y to X results in a binary number without overflow. This implies that the result is

-ve and is in normal form

-ve and 2's complement form

+ve and is in normal form

+ve and in 2's complement

⇒ The gate-source voltage that reduces the drain current to approximately zero is called

gate-source on voltage

gate-source voltage

pinch-off voltage

gate-source cut-off voltage

⇒ Fortran 77 has six arithmetic operators.

TRUE

FALSE

⇒ In the signal flow graph of the given figure, the number of forward path

1

2

3

4

⇒ In a BJT CE amplifier circuit the value of coupling capacitor should be such that

its reactance is small for the lowest frequency in the input and output

its reactance is high for the lowest frequency in the input and output

its reactance is zero for the lowest frequency in the input and output

its reactance is infinite for the lowest frequency in the input and output

⇒ In a rectangular waveguide

the broad width is generally labelled '

*a*' and height '

*b*'

the broad width is generally labelled '

*b*' and height '

*a*'

any one of the dimensions may be labelled '

*a*' and the other '

*b*'

the length is labelled as '

*a*'

⇒ The point P in the following figure is stock at 1. The output

*f*wil

ABC

A

AB C

A

⇒ In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and

90°

60°

45°

30°

⇒ When a power diode is conducting, the voltage drop across it is about

I V

5 V

20 V

50 V

⇒ 1101

_{2}- 1001

_{2}=

1000

100

10

1

⇒

**Assertion (A):** The amount of photoelectric emission depends on the intensity of incident light.

**Reason (R):** Photo electric emission can occur only if frequency of incident light is less than threshold frequency.

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

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

A is true but R is false

A is false but R is true