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 binary adder has |

A. | one half adder [Wrong Answer] |

B. | one half adder and 2 full adders [Wrong Answer] |

C. | two half adders [Wrong Answer] |

D. | one half adder and many full adders [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 :**

⇒ In two level logic, logic race does not occur.

TRUE

FALSE

⇒ Consider the following statements in connection with CMOS inverter in figure where both the MOSFET are of enhancement type and both have a threshold voltage of

Only statement 1 is true

Only statement 2 is true

Both the statement are true

Both the statements are false

⇒ Power is drawn from a source at power factor 0.7. P

_{av}= 300 watt. The reactive power is

0

105

100 VA

107 VA

⇒ Consider the following

- A signal
*f*(*t*) and its Hilbert transform*f*(_{h}*t*) have the same energy density spectrum - A signal
*f*(*t*) and its Hilbert transform,*f*(_{h}*t*) have the same auto correlation function - A signal
*f*(*t*) and its Hilbert transform are mutually orthogonal

1, 2 and 3

1 and 2 only

1 only

2 and 3 only

⇒ Soft iron is suitable for making temporary magnets.

TRUE

FALSE

⇒ For high frequencies a capacitor like

an open circuit

a short circuit

either open circuit or short circuit

none of the above

⇒ The time constant of the circuit in figur

RC

2 RC

3 RC

5 RC

⇒ In amplitude modulation, the magnitude of side bands is

*ma*/2 times the carrier amplitude, E

_{c}

*ma*times the carrier amplitude, E

_{c}

2

*ma*times the carrier amplitude, E

_{c}

4

*ma*times the carrier amplitude, E

_{c}

⇒ A retriggerable one shot is one which

can be triggered only once

has two quasi stable states

can not be retriggered till the complete pulse appears at output

can be retriggered while the output is being generated

⇒ Which of the following is not a valid character constant in C?

A'

2'

='

2

⇒ In the following astable multivibrator circuit, which properties of

*v*

_{0}(

*t*) depends on R

_{2Only the frequencyOnly the amplitudeBoth the amplitudeNeither the amplitude nor the frequency}

⇒ Sound waves are electromagnetic waves.

TRUE

FALSE

⇒ In Pascal if I = 55, 10 * I div 10 =

55

50

5.5

5

⇒ 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

⇒ Consider the following:

- Coupling capacitor
- Emitter by-pass capacitor
- Emitter to base diffusion capacitance of the BJT
- Stray capacitance of the circuit.

1 and 2

2 and 3

3 and 4

l and 4

⇒

**Assertion (A):** Logical group of instructions contains instructions for logic operations.

**Reason (R):** Data transfer group instruction is basically a copying instruction.

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 R is wrong

A is wrong R is correct

⇒ For Q >> 1, the output frequency of LC oscillator is equal to resonant frequency.

TRUE

FALSE

⇒ Magnetic amplifier is used for

voltage amplification

power amplification

current amplification

frequency amplification

⇒ For a particular type of memory the access time and cycle time are 200 ns each. The maximum rate at which data can be accessed by

2.5 x 10

^{6}/s

5 x 10

^{6}/s

0.2 x l0

^{6}/s

10

^{6}/s

⇒ Which of the following measurements using a dc potentiometer do not require standardisation of potentiometer?

Measurement of unknown voltage

Measurement of resistance

Measurement of unknown current

Calibration of voltmeter

⇒ A discrete LTI system is non-casual if its impulse response is

*a*

*∪(*

^{n}*n*- 2)

*a*

*∪(*

^{n-2}*n*)

*a*

*∪(*

^{n+2}*n*)

*a*

*∪(*

^{n}*n*+ 2)

⇒ In FM and AM the ratio of signal to noise ratio at the detector output least depends upon

bandwidth

transmission

carrier frequency

modulating frequency

⇒

Match the following:

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

A. | R = 0 | 1. | Undamped oscillation |

B. | R < 2 L/C | 2. | Damped oscillation |

C. | R = 2 L/C | 3. | Critically damped response |

D. | R > 2 L/C | 4. | Non-oscillatory response. |

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

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

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

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

⇒ The Fourier series of an odd periodic function contains

odd harmonics only

even harmonics only

cosine harmonics only

sine harmonics only

⇒ A TRIAC can be turned on :

by applying a positive signal to gate

by applying a negative signal to gate

by applying either positive or negative signal to gate

none of the above

⇒ Equipment using BCD numbers

pocket calculators

electronic counter

digital voltmeters

all of the above

⇒

Match the following:

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

A. | T (Reflection coefficient) = 0 | 1. | (Z_{L} - Z_{o})/(Z_{L} + Z_{o}) |

B. | T = - 1 | 2. | Z_{L} = Z_{o} |

C. | T = + 1 | 3. | Z_{L} = 0 |

D. | - 1 < T < + 1 | 4. | Z_{L} = ∞ |

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

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

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

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

⇒ A system has 12 poles and 2 zeros. Its high frequency asymptote in its magnitude plot has a slope of

-200 dB/decade

-240 dB/decade

-280 dB/decade

-320 dB/decade

⇒ A single phase half wave rectifier is feeding a resistive load. When a = 0, dc output voltage is 127 V. When a = 30°, the dc output voltage will be about

127 V

120 V

110 V

100 V

⇒ Out of SR and JK flip flops, which is susceptible to race condition?

SR

JK

Both SR and JK

None of the above