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Q1. | The hexadecimal number system is |

A. | widely used in analyzing and programming microprocessors [Correct Answer] |

B. | an obsolete system no more in use [Wrong Answer] |

C. | used in calculators only [Wrong Answer] |

D. | none of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ An FM signal has modulating frequency

*f*and maximum frequency deviation of δ. The bandwidth will be nearly equal to

_{m}δ

2 δ

2

*f*δ

_{m}*f*δ

_{m}⇒ When a ferromagnetic substance is magnetised, small changes in dimensions occur. Such a phenomenon is known as

magnetic hystresis

magnetic expansion

magneto striction

magneto calorisation

⇒ If

*a*and

*b*are the dimensions of waveguide then

*a*= 3

*b*

*a*= 2

*b*

*a*=

*b*

*a*=

*b*/4

⇒ The affect of ground on radiation pattern is to

cause cancellation of radiation along the ground

produce more number of nulls

both (a) and (b)

either (a) or (b)

⇒ 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)`

⇒ The high voltage level of a digital signal in positive logic is

1

0

either 1 or 0

-1

⇒ The turn off time of a bipolar transistor is about

0.5 ns

10 ns

70 ns

150 ns

⇒ A stationary process has

all statistical properties independent of time

all statistical properties dependent of time

zero variance

ensemble average equal to time average

⇒ In a circular waveguide with radius *r*, the dominant mode is

TM_{01}

TE_{01}

TM_{11}

TE_{11}

⇒ An interrupt in which the external device supplies its address as well as the interrupt is known as

vectored interrupt

maskable interrupt

polled interrupt

non-maskable interrupt

⇒ Match the following:

List I List II A. PMMC 1. Square law type scale B. Moving iron 2. Very good response C. Thermo-couple 3. Linear scale D. Electrostatic 4. Voltmeter

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

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

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

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

⇒ In figure the zener has a resistance of 5 ohms. As the load resistance is varied, the output vol

will remain constant at 12 V

will vary between 12.05 and 12.65 V

will vary from 10 to 20 V

will remain constant at 12.05 V

⇒ An excitation is applied to a system at *t* = T, and its response is zero for -∞ < *t* < T, such a system is

non-causal system

Stable system

causal system

unstable system

⇒ In 8085, the instruction CMA is an example of

Implict addressing

Direct addressing

Register addressing

Immediate addressing

⇒ In a CE amplifier the ac emitter resistance

is zero

is high

is very high

may have any value

⇒ Which of the following is an indirect way of generating FM?

Armstrong modulator

Varactor diode modulator

Reactance FET modulator

Reactance bipolar transistor

⇒ The number of flip flops needed for a Mod 7 counter are

7

5

3

1

⇒ Frequency band used for radar is generally

VLF

VHF

UHF

EHF

⇒ A (0.75 - *j*50) ohm load is connected to a coaxial transmission line of Z_{0} = 75 ohms at a frequency of 10 GHz Which of the following will be the best method of matching?

Connecting an inductance at the end

Connecting a short circuited stub at the load

Connecting a capacitance at some distance from the load

Connecting a short circuited stub at some specified distance from the load

⇒ During day time ionosphere can be considered to be consisting of

D, E, F_{1} and F_{2} layers

D, E, F_{1} layers

D, E, F_{2} layers

D and E layers

⇒ Which of the following statements is non-executable in FORTRAN 77?

DO

ASSIGN

END

DIMENSION

⇒ In figure, the value of R shoul

5 kΩ

50 kΩ

20 kΩ

10 kΩ

⇒ In a series RLC circuit excited by *e* = E_{m} sin ω*t* is seen that LC < 1/ω^{2}. Then

I lags E

I leads E

I leads E are in phase

voltage across L and C are equal

⇒ For a transistor if a_{dc} = 0.98 and emitter current *I*_{E} is 2 *mA*, then collector current will be

0.44 mA

0.88 mA

1.96 mA

3.32 mA

⇒ If F(*j*ω) is the Fourier transform of *f*(*t*), then

£ *f*(- *t*) = F(*j*ω)

£ *f*(- *t*) = F* (*j*ω)

£ *f*(- *t*) = F(- *j*ω)

£ *f*(- *t*) = F* (*- j*ω)

⇒ The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

TRUE

FALSE

⇒ If Nyquist plot has a encirclement of (-1 + *jo*) point, the system is stable if

there are no poles of G(*s*) H(*s*) in right-half plane

there is one pole of G(*s*) H(*s*) in right-half plane

there is no zeros of G(*s*) H(*s*) in right-half plane

none of the above

⇒ In a waveguide the dielectric region is generally

air

magnetic material

brass

mica

⇒ If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I

0.0416666666666667

0.0833333333333333

2.5 A

0.125

⇒ The number of unused states in a 4 bit Johnson counter is

2

4

8

12

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