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 point P in the following figure is stock at 1. The output f wil |

A. | ABC [Wrong Answer] |

B. | A [Wrong Answer] |

C. | AB C [Wrong Answer] |

D. | A [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 microphones works on the piezoelectric effect?

Carbon

Condenser

Moving coil

Crystal

⇒ A voltage

*v*= 100 sin (100 p

*t*+ 45°) V is applied to an impedance 10 +

*j*10 ohm. The current is

10 ∠45° A

7.07 ∠45° A

5 ∠45° A

5 ∠0 A

⇒ A

*n*-type silicon sample contains a donor concentration of N

_{d}= 2 x 10

^{16}cm

^{-3}. The minority carrier hole lifetime is t

_{p0}= 5 μs. The thermal equilibrium generation rate of hole is:

1.125 x 10

^{9}cm

^{-3}s

^{-1}

0.625 x 10

^{9}cm

^{-3}s

^{-1}

4.5 x 10

^{9}cm

^{-3}s

^{-1}

2.25 x 10

^{9}cm

^{-3}s

^{-1}

⇒ Frequency frogging is used in a carrier system to

conserve frequencies

reduce distortion

reduce cross talk

none of the above

⇒ In attenuation band, β is an odd multiple of p.

TRUE

FALSE

⇒ Which of the following analog modulation scheme requires the minimum transmitted power and minimum channel bandwidth?

VSB

DSB-SC

SSB

AM

⇒ The spins in a ferrimagnetic material are

all aligned parallel

partially aligned antiparallel without exactly cancelling out sublattice magnetisation

randomly oriented

all aligned antiparallel such that the sublattice cancels out exactly

⇒ In the circuit shown in given figure, the values of i(0

^{+}) and I(∞), will be respecti

zero and 1.5 A

1.5 A and 3 A

3 A and zero

3 A and 1.5 A

⇒ In a turnstile antenna the crossed dipoles are excited with voltages

in phase with each other

90° out of phase with each other

120° out of phase with each other

180° out of phase with each other

⇒ The main advantage of TDM over FDM is that it

needs less power

needs less bandwidth

needs simple circuitry

gives better S/N ratio

⇒ The inputs A, B, C of the given figure are applied to a 3 input NOR gate. The outpu

HIGH from 4 to 0

LOW from 0 to 4

HIGH from 0 to 1 and LOW from 1 to 4

LOW from 0 to 2 and HIGH from 2 to 4

⇒ In a RAM chip with a total of 8096 words, the word addresses range from

1 to 8096

0 to 8095

1 to 8095

0 to 8096

⇒ The thermionic emission current is given by

Fermi-Dirac distribution

Maxwell's equation

Richardson Dushman equation

Langmuir Child law

⇒ In a series resonant circuit, the resonant frequency is

geometric mean of half power frequencies

arithmetic mean of half power frequencies

difference of half power frequencies

none of the above

⇒ The precision of an instrument indicates its ability to reproduce a certain reading with a given

drift

resolutions

shift

consistency

⇒

**Assertion (A):** Positive feedback is not used in any circuit.

**Reason (R):** Positive feedback leads to instability.

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 but R is wrong

R is correct but A is wrong

⇒ A uniform plane wave travelling in air is incident on the plane boundary between air and another dielectric medium with e

*= 15. The reflection coefficient for normal incidence is*

_{r}0.6 ∠0°

1 ∠0°

0.6 ∠180°

1.2 ∠180°

⇒ The behaviour of a JFET is similar to that of

NPN transistor

PNP transistor

SCR

Vacuum triode

⇒

**Assertion (A):** Peak to peak value of a sinusoidal wave is 2.828 times the rms value.

**Reason (R):** Peak factor of a sinusoidal wave is 1.414.

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

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

A is true but R is false

A is false but R is true

⇒ The mass of an electron is nearly

9.1 x 10

^{-27}kg

9.1 x 10

^{-29}kg

9.1 x 10

^{-31}kg

9.1 x 10

^{-35}kg

⇒ If a function

*f*(

*t*) is an odd, function, its Fourier series

contains only sine terms

contains only cosine terms

contains a constant and sine terms

contains a constant and cosine

⇒ If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be

a voltage source

a current source

both of the above

none of the above

⇒ A T.V. station works at 300 MHz and radiates 100 kW of power. This signal received at a distance of 200 km will be

a few μV/m due to attenuation by atmosphere

1-5 mV due to ionospheric reflection

nil since propagation is line of sight

nil because signal fades completely at 300 MHz

⇒

Match the following:

List I (Characteristic equation) | List II (Degree of damping) | ||
---|---|---|---|

A. | s^{2} + 15s + 56.25 | 1. | Undamped |

B. | s^{2} + 5s + 6 | 2. | Underdamped |

C. | s^{2} + 20.25 | 3. | Critically damped |

D. | s^{2} + 4.55s + 42.25 | 4. | Overdamped |

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

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

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

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

⇒ Work function of oxide coated cathode is much lower than that of tungsten cathode.

TRUE

FALSE

⇒ A diode is operating in forward region and the forward voltage and current are

*v*= 3 + 0.3 sin ω

*t*(volts) and

*i*= 5 + 0.2 sin ω

*t*(mA). The average power dissipated is

15 mW

about 15 mW

1.5 mW

about 1.5 mW

⇒ The modulation index of an AM wave is changed from 0 to 1. The transmitted power is

unchanged

halved

increased by 50%

quadrupled

⇒ For transmission-line matching over range of frequencies, it is best to use a

single stub of adjustable position

double stub

broadband directional coupler

balun

⇒ Zero mean Gaussian noise of variance N is applied to a half wave rectifier. The mean squared value of the rectified output will be

0

N/2

N/2

N

⇒ Which one of the following statements is not a property of RL driving point impedance?

The first critical frequency at the origin is a zero

The last critical frequency is a pole

The impedance at S = ∞ always less than the impedance at S = zero

The slope of the impedance curve is positive at all points