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Q1. | What are the minimum number of 2 to 1 multiplexers required to generate a 2 input AND gate a 2 input Ex-OR gate? |

A. | 1 and 2 [Correct Answer] |

B. | 1 and 3 [Wrong Answer] |

C. | 1 and 1 [Wrong Answer] |

D. | 2 and 2 [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The electrolyte in nickel cadmium cell is dilute potassium hydroxide.

TRUE

FALSE

⇒ Consider the following statements:

- Internal sorting is used if the number of items to be sorted is very large.
- External sorting is used if the number of items to be sorted is vary large.
- External sorting needs auxiliary storage.
- Internal sorting needs auxiliary storage.

1 and 2

2 and 3

3 and 4

2 and 4

⇒ In a Weston synchronoscope, the moving coil is connected across

bus bar

incoming alternator

lamp

fixed coils

⇒ A FET is to be operated as voltage variable resistor. For this drain to source voltage V

_{DS}should be,

74

= V

_{P}

< V

_{P}

> V

_{P}

⇒ 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

⇒ A computer monitor uses 180 W in normal operation and 20 W in sleep mode. The computer is on all the 24 hours but is in sleep mode for 18 hours a days. The energy units saved in 30 days are

0.54 units

86.4 units

2.88 units

4.8 units

⇒ In 8086 the number of bytes which can be addressed directly is about

1000

10000

100000

one million

⇒ The frame of electric motor is connected to three plates having earthing resistance of 10 Ω, 20 Ω and 30 Ω respectively. The materials of the three plates are copper, aluminium and iron respectively. The percentage of energy dissipated by 10 Ω earthing plate

is more than 50% of total energy

is less than 50% of total energy

depends on the materials of the three plates

may be more or less than 50% of total energy

⇒ Final value theorem is used to find

steady state value of system output

initial value of output

transient beaviour of output

none of these

⇒ In a JK flip flop output Q

*= 1 and it does not change when clock pulse is applied. The possible combination of J*

_{n}*and K*

_{n}_{n}is (X denotes don't care)

X and 0

X and 1

0 and X

1 and X

⇒ Voltage series feedback (Also called series-shunt feedback) results in

increase in both I/P and O/P impedances

decrease in both I/P and O/P impedances

increase in I/P impedance and decrease in O/P impedance

decrease in I/P impedance and increase in O/P impedance

⇒ Speeds of sound and radio waves are equal.

TRUE

FALSE

⇒ Which one of following is correct for broadside array?

Direction of radiation is perpendicular to axis

Also perpendicular to the plane

Current is fed of equal amplitude equal phase

All

⇒ The power factor at the input terminals of a cyclo- converter is generally

low and leading

low and lagging

high and leading

high and lagging

⇒ The system shown in figure remains stable wh

k £ - 1

-1 < k < 1

l < k < 3

k > 3

⇒ An input voltage V(

*t*) = 10 2 cos (

*t*+ 10°) + 10 3 cos (2

*t*+ 10°)

*V*is applied to a series combination of resistance R = 1 kΩ inductance L = 1H. The resulting steady-state current

*i*(

*t*) in ampere is

10 cos (

*t*+ 55°) + 10 cos (2

*t*+ 10° tan

^{-1}2)

10 cos (

*t*+ 55°) + 103/2 cos (2

*t*+ 55°)

10 cos (

*t*- 35) + 10 cos (2

*t*+ 10° - tan

^{-1}2)

10 cos (

*t*- 35) + 103/2 cos (2

*t*+ 35°)

⇒ In a current transformers

the number of turns in primary and secondary windings are nearly equal

the number of primary turns is very small as compared to number of secondary turns.

the number of secondary turns is very small as compared to the number of primary turns

either (a) or (c).

⇒ The speed transducer using a drag cup rotor has the main advantage of

very high accuracy

low energy requirement

cheap construction

all of the above

⇒ If B = 4 +

*j*3, (B)

^{1/3}=

2 ∠30°

2 ∠36.87°

1.71 ∠12.3°

1.71 ∠30°

⇒ When diodes are connected in series to increase voltage rating the peak inverse voltage per junction

should not exceed half the breakdown voltage

should not exceed the breakdown voltage

should not exceed one third the breakdown voltage

may be equal to or less than breakdown voltage

⇒ In a shield helix

the spacing between adjacent turns is very large

the spacing between adjacent turns approaches zero

the spacing between adjacent turns approaches zero and wire thickness approaches zero

the spacing between adjacent turns is very large wire thickness approaches zero

⇒ In a series RLC circuit the phase angle θ of impedance Z ∠θ is positive. The circuit will behave as

resistive circuit

RC circuit

RL circuit

either RL or RC circuit

⇒ For a wave propagating in air filled rectangular waveguide.

guide wavelength is never less than free space wavelength.

wave impedance is never less than the free space impedance

TEM mode is possible if the dimension of the waveguide are properly chosen.

propagation constant is a real quantity.

⇒ A combination circuit is one in which the output depends on

input combination at that time

input combination and previous output

input combination and previous input

present output and previous output

⇒ In a klystron amplifier the input cavity is called

buncher

catcher

Pierce gun

collector

⇒ Which of the following is not valid in case of FETs?

It has low voltage gain

It has high input impedance

It has fast switching time

It is voltage controlled device

⇒

**Assertion (A):** The number ∈ such that the probability that an error is between -∈ and + ∈ is 1 is called probable error of single obserevation.

**Reason (R):** The standard deviation is the arms value of the deviation from the arithmetic mean.

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 synthesis of minimum function was suggested by

O'Brune

R. Richards

Bott and Duffin

none of the above

⇒ A signal

*f*(

*t*) = cos 10p

*t*+ 3 cos 4p

*t*is instantaneously sampled. The maximum allowable value of sampling interval T

_{s}in sec is

1 / 4 sec

1 / 8 sec

1 / 8p sec

1 / 10 sec

⇒ Following is a reason of distortion in communication system

external interference

random variations

insufficient Channel Bandwidth

all