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Q1. | The number of digits in octal system is |

A. | 8 [Correct Answer] |

B. | 7 [Wrong Answer] |

C. | 9 [Wrong Answer] |

D. | 10 [Wrong Answer] |

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

⇒ For global communication, the number of satellites needed is

1

3

10

5

⇒ The coupling capacitor mainly affects

bandwidth

lower cut-off frequency

higher cut-off frequency

both lower as well as higher cut-off frequency

⇒ Logic pulser

generates short duration pulses

generates long duration pulses

generates sinusoidal voltage

generates ideal pulses

⇒

**Assertion (A):** In loss of charge method, it is preferable to use an electronic voltmeter.

**Reason (R):** The resistance of electronic voltmeter is very high.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not correct explanation of A

A is true R is false

A is false R is true

⇒ Calculate

*i*(

*t*) for

*t*≥ 0, assuming the switch has been in position A for a long time at

*t*= 0, the switch is moved to positio

1 +

*e*

^{-5 x 103t}

*e*

^{-5 x 103t}

1.11

*e*

^{-5 x 103t}

1.11 (1 -

*e*

^{-5 x 103t})

⇒ Which of the following is a better propagation mode to propagate television frequency modulation and radar signals?

Satellite communication

Ground propagation

Polarized communication

None of the above

⇒ Consider the following program for 8085

decimal 40

decimal 10

none of the above

⇒

Match the following:

List I (BHE, A0) | List II (Word is read/write) | ||
---|---|---|---|

A. | 0, 0 | 1. | 1 byte from/to odd address |

B. | 0, 1 | 2. | 1 byte from/to even address |

C. | 1, 0 | 3. | 16 bit word |

D. | 1, 1 | 4. | None |

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

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

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

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

⇒ If memory chip size is 256 x 1 bits, the number of chips required to make 1 k byte memory is

8

12

24

32

⇒ In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as

transmission efficiency

front to back ratio

loss coefficient

none of the above

⇒ FM is named so because

it restrains the frequency excursions of FM

it increases the frequency excursions of FM

it decreases the amplitude of FM signal

it increases the amplitude of FM signal

⇒ Consider Pole zero diagram as shown, If two Poles are moved in opposite direction towards ω = p/2 and -p/2, the filter wil

change to high pass filter

change to Band Pass filter

remains same

change to LPF

⇒ Fourier transform o the function

*f*(

*t*) = 1 is

2p δ (ω)

p δ (ω)

δ(ω)/2p

δ(ω)/p

⇒ The noise temperature of sky is about __________ °K.

100

273

0

30

⇒ For circuit in figure, which combination of V

_{TH}and R

_{TH}represents the circuit as seen from

*ab<*

1 V, 10 Ω

1 V, 1000 Ω

1 mV, 1000 Ω

1 mV, 10 Ω

1 V, 10 Ω

1 V, 1000 Ω

1 mV, 1000 Ω

1 mV, 10 Ω

⇒ State variables which describe a system are a unique set.

TRUE

FALSE

⇒ Calculate the stability factor and change in I

42.53, 0.85 μA

40.91, 0.58 μA

40.91, 0.58 μA

41.10, 0.39 μA

⇒ The refractive index of E layer, if angle of incidence is 30°

0.5

0.25

0

1

⇒ The main disadvantage of a JFET is

low gain-bandwidth product

high noise level

high cost

low gain

⇒ A TV receiver has a width of 60 cm. The aspect ratio is 4/3. The required EHT supply is about

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2.9 kV

45 kV

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⇒ The direction of pick up in a CD is

linear from centre towards edge

linear from edge to centre

nonlinear from centre to edge

nonlinear from edge to center

⇒ Which statement is incorrect for the signal

Upper side band frequency is 1001000

Carrier amplitude is 5

Lower sideband frequency is 990000

⇒ Calculate wave impedance for TE mode

(377)Ω

226 Ω

∞

629 Ω

⇒ Algebraic expression for

X(Z - Z

X(

X(

X(Z)

⇒ Consider the following statements:

1 and 2

1, 2 and 3

2 and 3

1 and 3

⇒ The process of entering data into ROM is called

writing

burning

decoding

registering

⇒ To increase Q factor of a coil, the wire should be

long

thin

thick

long and thin

⇒ An op-amp is fed from a signal source through resistance R

equal to R

twice R

half R

either (b) or (c)

⇒ Transverse electric (TE) waves have

electric field component E in the direction of propagation

magnetic field component H in the direction of propagation

magnetic field component H in the direction of propagation and no component of electric field E in this direction

electric field component E in the direction of propagation and no component of magnetic field H in this direction

⇒ Sparking affects amplitude modulation.

TRUE

FALSE

⇒ State variables which describe a system are a unique set.

TRUE

FALSE

⇒ Calculate the stability factor and change in I

_{C}from 25°C to 100°C for, β = 50, R_{B}/ R_{E}= 250, ΔI_{C0}= 19.9 nA for emitter bias configuration.42.53, 0.85 μA

40.91, 0.58 μA

40.91, 0.58 μA

41.10, 0.39 μA

⇒ The refractive index of E layer, if angle of incidence is 30°

0.5

0.25

0

1

⇒ The main disadvantage of a JFET is

low gain-bandwidth product

high noise level

high cost

low gain

⇒ A TV receiver has a width of 60 cm. The aspect ratio is 4/3. The required EHT supply is about

29 kV

2.9 kV

45 kV

4.5 kV

⇒ The direction of pick up in a CD is

linear from centre towards edge

linear from edge to centre

nonlinear from centre to edge

nonlinear from edge to center

⇒ Which statement is incorrect for the signal

*x*(*t*) = 5 sin (2p x 10^{3}*t*) sin (2p x 10^{6}*t*)?Upper side band frequency is 1001000

Carrier amplitude is 5

Lower sideband frequency is 990000

*x*(*t*) is DSB-SC⇒ Calculate wave impedance for TE mode

(377)Ω

226 Ω

∞

629 Ω

⇒ Algebraic expression for

*z*-transform of*x*[*n*] is X[*z*]... What is the algebraic expression of*z*-transform of*e*^{jω0n}*x*[*n*]?X(Z - Z

_{0})X(

*e*^{-jW0z})X(

*e*^{jω0z})X(Z)

^{jω0z}⇒ Consider the following statements:

- With increase in temperature Fermi-level tries to come in between the energy gap exactly at middle
- Mobility of electron in GaAs is very high compared to mobility of hole
- In LED, the light energy radiated due to recombination with the aid of traps.

1 and 2

1, 2 and 3

2 and 3

1 and 3

⇒ The process of entering data into ROM is called

writing

burning

decoding

registering

⇒ To increase Q factor of a coil, the wire should be

long

thin

thick

long and thin

⇒ An op-amp is fed from a signal source through resistance R

_{1}. If it is to work as sign changer, the feedback resistance R_{f}should beequal to R

_{1}twice R

_{1}half R

_{1}either (b) or (c)

⇒ Transverse electric (TE) waves have

electric field component E in the direction of propagation

magnetic field component H in the direction of propagation

magnetic field component H in the direction of propagation and no component of electric field E in this direction

electric field component E in the direction of propagation and no component of magnetic field H in this direction

⇒ Sparking affects amplitude modulation.

TRUE

FALSE