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 AB + A C + BC = AB + A C the dual form is |

A. | (A + B) (A + C)(B + C) = (A + B)(A + C) [Correct Answer] |

B. | (A + B ) (A + C)(B + C) = (A + B)(A + C) [Wrong Answer] |

C. | (A + B) (A + C) (B + C) = (A + B) (A + C) [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 :**

⇒ A radio frequency signal contains the following three frequencie

Push pull amplifier

Wideband amplifier

Audio frequency amplifier

Tuned voltage amplifier

⇒

Match the following:

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

A. | PMMC | 1. | Square law type scale |

B. | Moving iron | 2. | Very good response |

C. | Thermo-couple | 3. | Linear scale |

D. | Electrostatic | 4. | Voltmeter |

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

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

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

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

⇒ The video heads, in VCR, feed the other circuit

directly windings

through a transformer having two rotating windings

through a transformer having two stationary windings

through a transformer having one stationary and one rotatory winding

⇒ Which of the following integer expressions is incorrect in Pascal?

`L div M + P `

`A * * B`

`A div B - C `

`A mod B`

⇒

Match the following:

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

A. | IF amplifier | 1. | Amplifier frequencies in the range of 100 kHz to 5 MHz. |

B. | RF amplifier | 2. | Current in the output flows only during a portion of the positive half of the input cycle |

C. | AF amplifier | 3. | Amplifier frequencies in the range of 0 Hz to 5 MHz |

D. | Class operation | 4. | Amplifier frequencies in the frequency range of 40 Hz to 15 kHz. |

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

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

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

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

⇒ The depletion layer around

*p*-

*n*junction in JFET consists of

hole

electron

immobile charges

none of the above

⇒ PCM employing 4 bit code is used to send data having frequency range from 0 to 2 kHz. The minimum required bandwidth of carrier channel is

2 kHz

4 kHz

8 kHz

16 kHz

⇒ For maximum transfer of power, internal resistance of the source should be

equal to load resistance

less than the load resistance

greater than the load resistance

none of the above

⇒ The number of interrupt lines in 8085 is

2

3

4

5

⇒ E

_{g}is the band gap, A is pre-factor,

*k*is Boltzmann constant? Which one of the following is the remaining grade of paper used in paper capacitor, besides the other two grade of paper-low and extra low loss?

Strong dielectric

Regular

Rough

High loss

⇒ A single phase half wave rectifier circuit has a free wheeling diode. The free wheeling diode will conduct only if

load is purely resistive

load is purely inductive

load is combination of R and L

load is purely inductive or combination of R and L

⇒ If ωε is the displacement current factor and s is conduction current density factor then which of the following statements is

*incorrect*?

For a lossless dielectric σ = 0

For an imperfect dielectric σ = 0

For a dielectric ωε >> σ

For a semiconductor ωε = σ

⇒ A computer memory is an ordered sequence of storage cells.

TRUE

FALSE

⇒ Homodyne detection means

coherent detection

non-coherent detection

asynchronous detection

none of the above

⇒ In rectifiers the use of RC filters is recommended when

load current is high

load current is small

load current is neither high nor small

either (a) or (c)

⇒ 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

⇒ It is desired to reduce distortion in a CE amplifier circuit. We should

reduce emitter current

reduce collector current

reduce ac base voltage

reduce base emitter voltage

⇒ A point charge of 6 μC is located at the origin, uniform line charge density of 180

*n*C/

*m*of 8

*m*length lies along the

*x*axis and a uniform sheet of charge equal to 25

*n*C/

*m*

^{2}of area p x 4

^{2}lies in the

*z*= 0 plane. Calculate total electric flux leaving the surface of sphere of 4

*m*radius centered at origin.

86.97 μC

8.697

*n*C

8.697 μC

86.97

*n*C

⇒ Choose the correct option, if

*b*(branch),

*n*(nodes),

*l*(links)

*b*=

*n*+

*l*- 1

no. of twig =

*n*- 1

*b*=

*n*-

*l*+ 1

*b*,

*a*

⇒ The changes in ambient temperature affect the open loop gain of amplifier.

TRUE

FALSE

⇒ Without a spectrum analyser, it is not possible to determine

carrier frequency

antenna pattern

pulse width

spurious signal strength and its location

⇒ Final value theorem is used to find

steady state value of system output

initial value of output

transient beaviour of output

none of these

⇒ Which of the following bridges is also used in an oscillator?

Maxwell

Schering

Hay

Wien

⇒ The integral of

*k*δ(

*t*) is

a step function of magnitude

*k*

a step function 'of magnitude 1/

*k*

a ramp of slope

*k*

a ramp of slope 1/

*k*

⇒ The quiescent collector current I

_{C}, and collector to emitter voltage V

_{CE}in a CE connection are the values when

ac signal is zero

ac signal is low

ac signal is negative

either (a) or (b)

⇒ Three identical coils each having self inductance L are connected in series so that the fluxes of all the three are in the same direction. If mutual inductance between each pair of coils is M, the total inductance of the arrangement is

3 L + 9 M

1.5 L + 3 M

3 L + 3 M

3 L + 6 M

⇒ For real and odd signals, the Fourier series coefficient

*a*is

_{n}purely imaginary

purely real and even

purely imaginary and odd

purely real and odd

⇒ Which one of the following blocks is not common in both AM and FM receivers?

RF amplifier

Mixer

IF amplifier

Slope detector

⇒ The purpose of using negative feedback in a op-amps is to

stabilize overall gain

increase output

stabilize overall gain and increase output

increase output and decrease input

⇒ Which device can detect the presence of both forward and backward waves in a waveguide?

Filter

Detector

Directional coupler

Magic T