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Q1. | A microwave link uses only line-of-sight propagation. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ The point P in the following figure is stock at 1. The output

*f*wil

ABC

A

AB C

A

⇒ FF

_{16}when converted to 8421BCD =

0000 0101 0101

0010 0101 0101

1111 0101 0101

1000 0101 0101

⇒ Which of the following capabilities are available in a Universal Shift Register?

- Shift left
- Shift right
- Parallel load
- Serial add

2 and 4 only

1, 2 and 3

1, 2 and 4

1, 3 and 4

⇒ The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be

1011

1101

1100

1110

⇒ The units of F(

*j*ω) are volt-seconds.

TRUE

FALSE

⇒ The open loop gain of an amplifier is 200. If negative feedback with β = 0.2 is used, the closed loop gain will be

200

40

4.878

1.212

⇒ The sum of 1110101

_{2}and 11011

_{2}in decimal form will be

65

75

85

95

⇒ In the circuit of figure diode will con

from 90 to 180° in the positive half cycle

from 30° to 180° in the positive half cycle

from 50° to 160° in the positive half cycle

from 30° to 150° in the positive half cycle

⇒ In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require

1120 bits

2240 bits

33 bits

64 bits

⇒ For the two port of figure,

*z*

_{1126/7 Ω10/3 Ω6 Ω2 Ω}

⇒ The minimum value of

*h*

_{fe}of a transistor used in RC phase shift oscillator is

54.4

45.4

44.5

29

⇒ Typical switching time for ECL is

5 nano seconds

5 micro seconds

5 milli seconds

5 seconds

⇒ Integrated fin line can be utilized as a medium for constructing millimeter wave circuits.

TRUE

FALSE

⇒ It is desired to evaluate the expression

`F = B * COS (Y) + C * SQR (COS (Y) + A * COS (Y) * COS (Y) * COS (Y)`

`F = B * COS (Y) + C * SQR [COS (Y)] + A * COS (Y) * SQR [COS (Y)]`

`F = B * COS (Y) + C * COS(Y) * COS (Y) + A * COS (Y) * COS (Y) * COS (Y)`

` X = COS(Y)`

⇒ When a pentavalent impurity is added, the semiconductor becomes

*p* type

*n* type

intrinsic

neutral

⇒ For a binary half subtractor having two inputs *A* and *B* the correct sets of logical expressions for the outputs *D* (*A* - *B*) and *X* = Borrow are

D = AB + AB, X = AB

D = AB AB, X = AB

D = AB + AB, X = AB

D = AB + A B, X = AB

⇒ 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

⇒ The read and write cycle times of cache memory are in the range of

1 - 3 *ns*

25 *ns* - 45 *ns*

200 *ns* - 300 *ns *

1 μ*s*

⇒ In a metal, the valence electrons

are not shared

are shared only between neighbouring atoms

are shared by all atoms

either (b) or (c)

⇒ How is inversion achieved using EX-OR gate?

Giving input signal to the two input lines of the gate tied together

Giving input to one input line and logic one to the other line

Giving input to one input line and logic one to the other line

Inversion cannot be achieved using EX-OR gate

⇒ In a single stage differential amplifier, the output offset voltage is mainly dependent on the mismatch of

V_{BE}, I_{B} and β

V_{BE} and I_{B}

I_{B} and β

V_{BE} and β

⇒ Given below impulse response of two sys

*h*_{1}(*n*) non causal and stable

*h*_{1}(*n*) non causal and stable

*h*_{1}(*n*) causal and not stable

*h*_{1}(*n*) causal and stable

⇒ 'Rotate instruction' in microprocessor belongs to

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arithmetic group

logic group

branch group

⇒ Harmonic distortion in CB amplifier may be least when the load resistance is

negligible

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very high

infinite

⇒ An image uses 512 x 512 picture elements. Each element can take any of eight distinguishable levels. The maximum entropy in the above image will be

2097152 bits

786432 bits

648 bits

144 bits

⇒ The analog signal given below is sampled by 600 samples per second for *m*(*t*) = 3 sin 500 p*t* + 2 sin 700 p*t* then folding frequency is

500 Hz

700 Hz

300 Hz

1400 Hz

⇒ In 8085 microprocessor, how many interrupt control lines are there?

6

8

12

16

⇒ An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased

the number of free electrons increases

the number of free electrons increases but the number of holes decreases

the number of free electrons and holes increase by the same amount

the number of free electrons and holes increase but not by the same amount

⇒ Boolean algebra obeys

commutative law

associative law

distributive law

commutative, associative and distributive law

⇒ For a 2 port network, the O/P short circuit current was measured with a 1 volt source at the I/P then value of the current gives

*h*_{12}

*y*_{12}

*h*_{21}

*y*_{21}

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