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. | A carrier is simultaneously modulated by two sine waves having modulation indices of 0.4 and 0.3. The total modulation index will be |

A. | 0.1 [Wrong Answer] |

B. | 0.7 [Wrong Answer] |

C. | 0.5 [Correct Answer] |

D. | 0.35 [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 :**

⇒ A two branch parallel tuned circuits has a coil of resistance R and inductance L in one branch and capacitance C in the second branch. The bandwidth is 200 radians/sec. A load of resistance R

_{L}is connected in parallel. The new bandwidth will be

200 rad/sec

more than 200 rad/sec

less than 200 rad/sec

200 rad/sec or less

⇒ A phasor is

a line representing the magnitude and direction of an alternating quantity

a line which represents the magnitude and phase of an alternating quantity

an instrument used for measuring phases of an unbalanced 3-phase load

a coloured tag or band for distinguishing between different phases of a 3-phase supply

⇒ In the given figure shows a 10dB directional coupler. If power input at port 1 is 100 mW, power output at port

10 mW

15 mW

20 mW

25 mW

⇒

**Statement 1**

Statement 1 is true but statement 2 is false

Statement 1 is false but statement 2 is true

Both the statements are true

Both the statements are false

Statement 1 is true but statement 2 is false

Statement 1 is false but statement 2 is true

Both the statements are true

Both the statements are false

⇒ In a coaxial cable, braided copper is used for

conductor

shield

dielectric

jacket

⇒ For the DAC in the given figure V

⇒ If A = 10 +

14.14 ∠45°

200 ∠45°

2.65 +

2.65 +

⇒ In a rectangular waveguide there is one half wave variation of electric field across the narrow dimension and two half wave variations of electric field across wider dimension. The dominant mode is

TM

TE

TE

TM

⇒ Ground wave propagation is useful for

microwave

medium wave

short wave

long distance

⇒ The simplest standing wave is due to the value of reflection co-efficient is

-1

zero

unity

infinity

⇒ Diffraction of EM waves

arises only with spherical wave front

may occur around the edge of an obstacle

occurs when waves pass through a big slot

none of the above

⇒ Consider the following in C

All

1 and 2 only

2 and 3 only

1 and 3 only

⇒ A delay equalizer is a

low pass filter

band pass filter

all pass filter

high pass filter

⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. Assuming the signal to be uniformly distributed between its peak values, the signal to noise ratio at the quantizer output is

156 dB

32 dB

48 dB

64 dB

⇒ Consider a multiplexer with X and Y as data inputs and Z as control input. Z = 0 selects input X and Z = 1 selects input Y. What are the connections required to realize the 2-variable Boolean function

R to X, 1 to Y, T to Z

T to X, R to Y, T to Z

T to X, R to Y, 0 to Z

R to X, 0 to Y, T to Z

⇒ Television signals are propagated as ground waves.

TRUE

FALSE

⇒ For an

|I - A|

|λI - A| = 0

|λA - I| = 0

|A - I| = 0

⇒ An S/N ratio of 3 expressed in db is

4.8 dB

2.4 dB

0.48 dB

0.24 dB

⇒ Which is correct for a driving point function?

If the real part of a pole or zero is zero, that pole must be simple

If the real part of a pole or zero is zero, that pole or zero must be simple

If the real part of a zero is zero, that pole or zero must be simple

If the real part of a zero is zero that zero must be simple

⇒ The

TRUE

FALSE

⇒ In energy band diagram of

in valence band

in conduction band

slightly above valence band

slightly below conduction band

⇒ A Discone antenna is

a combination of disk and cone in close approximity

a combination of disk and cone at λ/4 spacing

a combination of disk and cone far apart

a combination of disk and cone at λ/2 spacing

⇒ While AM has __________ frequencies, FM has __________ number of sidebands.

2, 3

3, 3

3, 5

3, infinite

⇒ Consider the following statements about ultrasonic flow meters:

1 only

1 and 2 only

1, 2 and 4

3 and 4 only

⇒ δ(

energy signal

power signal

neither energy nor power

none

⇒ Windows automatically starts CD player when one inserts audio CD in CD-ROM drive.

TRUE

FALSE

⇒ The Boolean expression Y = (A + B + AB) C then

AC

BC

C

none

⇒ RAMs can be built with bipolar or CMOS transistor RAMs that are not possible with bipolar transistors are

SRAM

SRAM, DRAM

DRAM

PROM

⇒ Effective Q of the equivalent electrical circuit of quartz crystal is of the order of

200

2000

20000

200000

⇒ The input impedance for folded dipole antenna (two half dipole) is

73

377

73

377

⇒ In a coaxial cable, braided copper is used for

conductor

shield

dielectric

jacket

⇒ For the DAC in the given figure V

_{O10 V5 V4 V8 V}⇒ If A = 10 +

*j*then log_{e}A is14.14 ∠45°

200 ∠45°

2.65 +

*j*45°2.65 +

*j*0.785⇒ In a rectangular waveguide there is one half wave variation of electric field across the narrow dimension and two half wave variations of electric field across wider dimension. The dominant mode is

TM

_{12}TE

_{13}TE

_{21}TM

_{25}⇒ Ground wave propagation is useful for

microwave

medium wave

short wave

long distance

⇒ The simplest standing wave is due to the value of reflection co-efficient is

-1

zero

unity

infinity

⇒ Diffraction of EM waves

arises only with spherical wave front

may occur around the edge of an obstacle

occurs when waves pass through a big slot

none of the above

⇒ Consider the following in C

- An arithmetic operation between integer and an integer gives integer as the result.
- An arithmetic operation between a real and a real constant gives real constant as the result.
- An arithmetic operation between an integer constant and a real constant is not valid.

All

1 and 2 only

2 and 3 only

1 and 3 only

⇒ A delay equalizer is a

low pass filter

band pass filter

all pass filter

high pass filter

⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. Assuming the signal to be uniformly distributed between its peak values, the signal to noise ratio at the quantizer output is

156 dB

32 dB

48 dB

64 dB

⇒ Consider a multiplexer with X and Y as data inputs and Z as control input. Z = 0 selects input X and Z = 1 selects input Y. What are the connections required to realize the 2-variable Boolean function

*f*= T + R, without using any additional hardware?R to X, 1 to Y, T to Z

T to X, R to Y, T to Z

T to X, R to Y, 0 to Z

R to X, 0 to Y, T to Z

⇒ Television signals are propagated as ground waves.

TRUE

FALSE

⇒ For an

*m*x*n*matrix A, the eigen values are the roots of the characteristic equation|I - A|

|λI - A| = 0

|λA - I| = 0

|A - I| = 0

⇒ An S/N ratio of 3 expressed in db is

4.8 dB

2.4 dB

0.48 dB

0.24 dB

⇒ Which is correct for a driving point function?

If the real part of a pole or zero is zero, that pole must be simple

If the real part of a pole or zero is zero, that pole or zero must be simple

If the real part of a zero is zero, that pole or zero must be simple

If the real part of a zero is zero that zero must be simple

⇒ The

*n*state variables can be considered as*n*components of a state vector.TRUE

FALSE

⇒ In energy band diagram of

*n*type semiconductor, the donor energy level isin valence band

in conduction band

slightly above valence band

slightly below conduction band

⇒ A Discone antenna is

a combination of disk and cone in close approximity

a combination of disk and cone at λ/4 spacing

a combination of disk and cone far apart

a combination of disk and cone at λ/2 spacing

⇒ While AM has __________ frequencies, FM has __________ number of sidebands.

2, 3

3, 3

3, 5

3, infinite

⇒ Consider the following statements about ultrasonic flow meters:

- The measurement in insensitive to viscosity, pressure and temperature variations.
- It has bidirectional measuring capability and can be used for any pipe size.
- It has a relatively lower cost.
- It has good accuracy, fast response and wide frequency range.

1 only

1 and 2 only

1, 2 and 4

3 and 4 only

⇒ δ(

*t*) is aenergy signal

power signal

neither energy nor power

none

⇒ Windows automatically starts CD player when one inserts audio CD in CD-ROM drive.

TRUE

FALSE

⇒ The Boolean expression Y = (A + B + AB) C then

*Y*will be equal toAC

BC

C

none

⇒ RAMs can be built with bipolar or CMOS transistor RAMs that are not possible with bipolar transistors are

SRAM

SRAM, DRAM

DRAM

PROM

⇒ Effective Q of the equivalent electrical circuit of quartz crystal is of the order of

200

2000

20000

200000

⇒ The input impedance for folded dipole antenna (two half dipole) is

73

*n*^{2}377

*n*^{2}73

*n*377

*n*