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 FM 'guard band' is provided |

A. | to limit upper frequency limit [Wrong Answer] |

B. | to limit lower frequency limit [Wrong Answer] |

C. | so that there is less adjacent channel interference [Correct Answer] |

D. | to limit transmitted power of a station [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ In LIFO

only the top of the stack is immediately accessible

only the top of the stack is never accessible

only the first-in is accessible

only the first-in is not accessible

⇒ Dielectric constant of transformer oil is about

1

4

10

20

⇒ Which one of following is correct condition to check the stability of sysytem in terms of impulse response?

Σ(

*x*(

*n*)) < ∞

Σ

*x*(

*n*) < 0

Σ

*x*(

*n*) = 0

Σ

*x*(

*n*) = ∞

⇒ The first pulse in a TV remote control is

start pulse

preliminary pulse

either start pulse or preliminary pulse

erase pulse

⇒

Match the following:

List I (Signal) | List II (Value) | ||
---|---|---|---|

A. | AM | 1. | 0 0.5 |

B. | DSB - SC | 2. | 1 |

C. | SSB | 3. | 2 |

D. | FM (β = 2) | 4. | 16 |

E. | FM (β = 5) | 5. | 8 |

A-1, B-3, C-2, D-5, E-4

A-3, B-3, C-1, D-5, E-4

A-2, B-1, C-4, D-5, E-5

A-4, B-2, C-5, D-3, E-1

⇒ For the shaded area in Venn diagram of the given figure, the Boolean expressio

AB + BC + CA

ABC + A B C

ABC + A B C

ABC+AB

⇒ For the characteristic equation

*s*

^{5}+

*s*

^{4}+ 2

*s*

^{3}+ 2

*s*

^{2}+ 3

*s*+ 15 = 0, the number of roots in left half

*s*plane are

1

2

3

5

⇒ If A = B = 1, the outputs P and Q in the given figure

P = Q = 0

P = 0, Q = 1

P = 1, Q = 0

P = Q = 1

⇒ The impedance inversion may be objected with

a short-circuited stub

an open-circuited stub

a half-wave line

a quarter-wave line

⇒ For a single phase half wave converter feeding a resistive load, the firing angle a. The waveshape in below figure is

output voltage

input voltage

voltage drop across thyristor

none of the above

⇒ Which one most appropriate dynamic system?

*y*(

*n*) +

*y*(

*n*- 1) +

*y*(

*n*+ 1)

*y*(

*n*) +

*y*(

*n*- 1)

*y*(

*n*) =

*x*(

*n*)

*y*(

*n*) +

*y*(

*n*- 1) +

*y*(

*n*+ 3) = 0

⇒ A current of 1 A in the coil of an iron cored electromagnet cause a flux density of 0.2.T. If the current is 2 A, B=

0.2 T

0.4 T

0.4 T or less

0.4 T or more

⇒ In free space, line of sight propagation case, the transmission losses between transmitter and receiver increase with frequency (

*f*) as

*f*

*f*

^{2}

*f*

^{4}

*f*

^{1/2}

⇒ A discrete random variable X takes values from 1 to 5 with probabilities as shown in the table. A student calculates the mean of X and 3.5 and her teacher calculates the variance of X as 1.5. Which of the following statements is t

Both the student and the teacher are right

Both the student and the teacher are wrong

Both the student is wrong but the teacher is right

The student is right but the teacher is wrong

⇒ In C the range of real constants expressed in exponential form is

-2.3

*e*37 to + 2.3

*e*37

-3.4

*e*38 to + 3.4

*e*38

-3.4

*e*37 to + 3.4

*e*37

-2.3

*e*38 to + 2.3

*e*38

⇒ If a dipole is meant for a frequency of 1 MHz, the length of each rod is about

5 m

20 m

100 m

50 m

⇒ The resistance of the circuit shown is figur

5 Ω

More than 6 Ω

More than 4 Ω

Between 6 and 7 Ω

⇒

**Assertion (A):** XOR gate is not universal gate.

**Reason (R):** It is not possible to realize any Boolean function using XOR gates only.

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 true, R is false

A is false, R is true

⇒ The poles with greater displacement from the real axis correspond to

higher frequencies of oscillations

stable response

lower frequencies of oscillations

unbounded output

⇒

**Assertion (A):** In a circuit having high inductance, reactive power may be more than apparent power.

**Reason (R):** Reactive power = VI sin θ.

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

⇒ Decimal number 9 in gray code =

1100

1101

110

1111

⇒

Match the following:

List I (Operator) | List II (Description) | ||
---|---|---|---|

A. | & & | 1. | Bitwise inclusive OR |

B. | & | 2. | Bitwise AND |

C. | | | | 3. | Logical AND |

D. | | | 4. | Logical OR |

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

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

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

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

⇒ Consider the following statement in B

200, 250, 150 respectively

150, 200, 250 respectively

250, 200, 150 respectively

200, 150, 250 respectively

⇒ In PAL system weighting of R - Y and B - Y signals is done to

prevent over modulation on saturated colours

prevent under modulation of saturated colours

allow over modulation of saturated colours

allow under modulation on saturated colours

⇒ If the absolute value of a number is less than decimal 1, the sign of exponent in floating point representation is

zero

negative

zero or negative

positive

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

low, low

high, high

low, high

high, low

⇒ The poles of an RC function

are simple and lie or negative real axis

are simple and lie on ω axis

must be complex conjugate

may be anywhere on

*s*plane

⇒ For a given value

*(n)*of principle quantum number, the number of possible electronic states are

*n*

*n*

^{2}

*n*

^{3}

*n*

⇒ The name modem is a contraction of terms modulator demodulator.

TRUE

FALSE

⇒ In 8085 microprocessor, how many lines are there in data bus?

6

8

2

16