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Q1. | A TV receiver has a width of 60 cm. The aspect ratio is 4/3. The required EHT supply is about |

A. | 29 kV [Correct Answer] |

B. | 2.9 kV [Wrong Answer] |

C. | 45 kV [Wrong Answer] |

D. | 4.5 kV [Wrong Answer] |

View Answer
Explanation:-
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⇒ Each instruction in assembly language program has the following fields:

- Lable field
- Mnemonic field
- Operand field
- Comment field

1, 2, 3, 4

1, 2, 4, 3

2, 1, 3, 4

2, 1, 4, 3

⇒ An FM signal is modulated by an 8 kHz sine wave and has maximum and minimum frequencies of 100.05 MHz and 99.95 MHz respectively. Its deviation frequency is

100 kHz

100 MHz

500 kHz

108 kHz

⇒ A dynamic RAM cell which holds 5 V has to be refreshed every 20 ms so that the stored voltage does not fall by more than 0.5 V. If the cell has a constant discharge current of 0.1 pA, the storage capacitance of cell is

4 x 10

^{-6}F

4 x 10

^{-9}F

4 x 10

^{-12}F

4 x 10

^{-15}F

⇒ In figure the dc load line will meet the

*y*and

*x*axis respectivel

20 mA and 30 V

15 mA and 20 V

25 mA and 40 V

10 mA and 20 V

⇒ Calculate the resistivity of

*n*-type semiconductor from the following data, Density of holes = 5 x 10

^{12}cm

^{-3}. Density of electrons = 8 x 10

^{13}cm

^{-3}, mobility of conduction electron = 2.3 x 10

^{4}cm

^{2}/ V-sec and mobility of holes = 100 cm

^{2}/V-sec.

0.43 Ω-m

0.34 Ω-m

0.42 Ω-m

0.24 Ω-m

⇒ In a JFET, the lower end is called the __________ and the upper end is called the __________ .

source, channel

channel, drain

source, drain

drain source

⇒ If γ = (S

_{0}/N

_{0})/(S

_{i}/N

_{m}) where S

_{0}and S

_{1}are signal power output and signal power input and N

_{0}and N

_{m}are noise power output and noise power input, the value of γ for SSB-SC and DSB-SC amplitude modulated system respectively are

1 and 1

1 and 2

2 and 1

0.5 and 0.5

⇒ In the following non planar graph number of independent loop equations

8

12

7

5

⇒ An 8 bit wide 4 word sequential memory has

Eight 4 bit shift registers

Eight 8 bit shift registers

Four 8 bit shift registers

Foui 4 bit shift registers

⇒ Find I in 4 Ω resis

0.0416666666666667

0.5 A

0.75 A

0.95 A

⇒ Which of the following is a valid real variable in FORTRAN 77?

IT

GURGAON

42892

SUNDAY

⇒ Which one is a linear system?

*y*[

*n*] =

*x*[

*n*] x

*x*[

*n*- 1]

*y*[

*n*] =

*x*[

*n*] +

*x*[

*n*- 10]

*y*[

*n*] =

*x*

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*n*]

(a) and (c)

⇒ A device that converts from decimal to binary numbered is called

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encoder

CPU

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⇒ A 2 μF capacitor is shunted by a 1 kΩ maintained at temperature 400 K. The rms noise voltage across the capacitor over the entire frequency band is:

6.25 x 10

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5.25 x 10

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6.25 x 10

^{-6}V

5.25 x 10

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⇒ The inductance of a coil can be increased by

choosing core material having high relative permeability

decreasing diameter of the former

decreasing the number of turns

increasing core length

⇒ Which materials find application in MASER?

Diamagnetic

Paramagnetic

Ferromagnetic

Ferrimagnetic

⇒ 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

⇒ A voltage wave containing 10% third harmonic is applied to a scries R-L circuit. The percentage third harmonic content in the current wave will be

more than 10%

10% or less than 10%

less than 10%

10% or more or less

⇒ For the two port of figure,

*z*

_{1126/7 Ω10/3 Ω6 Ω2 Ω}

⇒ SSB can be generated by

filter method

phase cancellation method

good attenuation characteristics

all of the above

⇒ The resonance frequency of the circui

5.4 K

*n*

_{2}

4.5 K

*n*

_{2}

5 K

*n*

_{2}

∞

⇒ A seven bit (even parity) code 0010001 may have error. The correct code is

10001

1110001

11001

1111110

⇒ The arrangement in the given figure is a hybid

*T*. If 100 mW fed at port 1, the power reflected back at port

0

25 mW

50 mW

100 mW

⇒ The signal input to a given amplifier is made up of 100 mΩ signal power and 1 mΩ noise power. The amplifier contributes an additional 100 mΩ of noise and has a power gain of 20 dB. The output signal-to-noise ratio is

100

50

10

5

⇒ The bandwidth of DSB suppressed carrier modulation system when the modulating frequency varies between 500 Hz and 5 kHz is

555 kHz

505 kHz

500 kHz

9 kHz

⇒ A ring counter with 5 flip flops will have

5 states

10 states

32 states

infinite states

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

_{DS}should be,

74

= V

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⇒ The ac bridge in figure is balanced. Z

_{1}= 100∠30°, Z

_{2}= 150∠0°, Z

_{3}= 250∠ - 40° Then Z

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⇒ In a purely resistive circuit the instantaneous power varies from zero to maximum twice in each cycle.

TRUE

FALSE

⇒ Nichols chart consists of M and N locii in log magnitude versus phase diagram.

TRUE

FALSE