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. | In pulse code modulation when the maximum frequency in the signal is f the bandwidth required will be_{max} |

A. | ≤ p.f [Wrong Answer]_{max} |

B. | ≥ p.f [Correct Answer]_{max} |

C. | ≤ (p.f)_{max}^{2} [Wrong Answer] |

D. | ≥ (p.f)_{max}^{2} [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 :**

⇒ The number of valence electrons in acceptor impurity are

5

4

3

1

⇒ The inconsistency of Ampere's law can be removed by adding __________ to it.

displacement current density alone.

conduction current density alone.

displacement and conduction current densities.

none of these

⇒ Which of the following is susceptible to race condition?

R-S latch

D latch

Both R - S and D latches

None of the above

⇒ If quadratic equation

*x*

^{2}- 1000

*x*+ 25 = 0 is solved using floating point arithmetic with 4 digit mantissa, the roots are

.1000 E 4 and .1000 E 4 respectively

.0000 E 4 and .0000 E 4 respectively

.1000 E 4 and .0000 E 4 respectively

None of the above

⇒ A three state switch has three outputs. These are

low, low and high

low, high, high

low. floating, low

low, high, floating

⇒ Induction wattmeter is an absolute instrument.

TRUE

FALSE

⇒ The common gate amplifier has a characteristically __________ input resistance and a __________ output resistance.

low, low

high, high

low, high

high, low

⇒ Consider the following statements:

- If any root of characteristic equation has a positive real part the impulse response is unbounded and system is unstable.
- If all the roots of a characteristic equation have negative real parts, the impulse response decays to zero.
- If one or more non-repeated roots of characteristic equation are on
*j*ω axis impulse response is bounded but the system is unstable.

1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ A silicon diode is forward biased and total applied voltage is 5 V. The voltage across

*p*-

*n*junction is

5 V

Slightly less than 5 V

0.7 V

0

⇒ If

*f*(

*t*) = 1, F(

*j*ω) = 2p δ(ω).

TRUE

FALSE

⇒ How can the bandwidth of a control system be increased?

By the use of phase lead network

By the use of phase lag network

By the use of both phase-lag and phase-lead network

By the use of cascaded amplifiers in the system

⇒ The analog signal given below is sampled by 600 samples per se

600 Hz

120 Hz

300 Hz

360 Hz

⇒ As compared to dimensions of most feeds, the skin depth at microwave frequencies is

of the same magnitude

much larger

much smaller

either (b) or (c)

⇒ Which of the following pulse-time modulation is least used?

PDM

PPM

PWM

PAM

⇒

Match the following:

List I (Form) | List II (Network) | ||
---|---|---|---|

A. | Cauer I | 1. | L in series arm and C in shunt arm of ladder |

B. | Cauer II | 2. | C in series arm and L in shunt arm of ladder |

C. | Foster I | 3. | Series combination of L and C in parallel |

D. | Foster II | 4. | Parallel combination of L and C in series |

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

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

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

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

⇒ In ac bridge measurements, 'Wagner ground' means

a special RC connection to eliminate stray magnetic effects

a special RC connection to eliminate stray capacitance effects

an unwanted and unintended ground connection

a large metal plate buried in ground connected to one corner of bridge

⇒ Characteristic wave impedance is

ε/μ

(ε/μ)

^{1/2}

E

_{x}/H

_{y}

H

_{y}/E

_{x}

⇒ The carriers of

*n*channel JFET are

free electrons and holes

holes

free electrons or holes

free electrons

⇒ Neper is

larger than a decibel

smaller than decibel

equal to 1 decibel

none of the above

⇒ Consider the following in C

- Arithmetic operations can be performed on ints.
- Arithmetic operations can be performed on floats.
- Arithmetic operation can be performed on chars

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Which of the following theorems is a manifestation of law of conservation of energy?

Tellegen's theorem

Reciprocity theorem

Thevenin's theorem

Norton's theorem

⇒ 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

⇒ Two capacitors of 1 μF and 2 μF are connected in series across a 10 V dc battery. After the capacitors have been charged, the charges across the two capacitors will be

10 μC each

20 μC each

10 μC and 20 μC

20 μC and 10 μC

⇒ RTD is generally suitable for temperature up to

about 800°C

about 1500°C

about 200°C

about 50°C

⇒ The D'Arsonval- movement can be converted into audio frequency ac ammeter by adding a

thermocouple

transducer

chopper

rectifier

⇒ Which configuration has high input impedance and low output impedance?

CB

CE

CC

CB and CE

⇒ Binary 101010 is equivalent to decimal number

24

42

44

64

⇒ Two linearly polarized plane waves

*A*and

*B*travelling in free space in the positive

*x*direction meet at a point. Wave

*A*is polarized in the

*y*direction and the wave

*B*is polarized in the

*z*direction. If the two waves are of equal amplitude and are in phase quadrature, the resultant wave will be

circularly polarized

elliptically polarized

linearly polarized

vertically polarized

⇒ For an ideal 3000 Hz channel, S/N ratio is

3

1.5

4

2

⇒

**Assertion (A):** When the anode current of an SCR starts increasing during turn on process, the anode cathode voltage drop starts decreasing.

**Reason (R):** During turn on the reverse biased junction in SCR breaksdown.

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

Both A and R correct but R is not correct explanation of A

A is correct but R is wrong

A is wrong but R is correct