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Q1. | As regards BCH code, Hamming code and Reed-Solomon code |

A. | BCH and Hamming code are special cases of Reed-Solomon code [Wrong Answer] |

B. | Reed-Solomon and Hamming code are special cases of BCH code [Correct Answer] |

C. | BCH and Reed-Solomon code are special case of Hamming code [Wrong Answer] |

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

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

⇒ A 360 W carrier is simultaneously modulated by two audio wave with modulation percentage of 55 and 65 respectively. Total sideband power radiated will be

500 W

360 W

180 W

130 W

⇒ If the number of ways an event may result ins analysed into

*m*successes and

*n*failures, each equally likely to occur, the probability of success in a single trial is

*m*(

*m*+

*n*)

TRUE

FALSE

⇒ A moving iron voltmeter reads 250 V when connected to 250 V dc. If connected to 250 V 50 Hz, the voltmeter reading is likely to be

250 V

252 V

248 V

210 V

⇒ A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of

Kirchoff's laws

Superposition theorem

Thevenin's theorem

Tellegen's theorem

⇒ In 8085 the address space size is

64 kbits

64 k bytes

32 kbits

16 k bytes

⇒ Hysteresis loss is proportional to

*f*and B

^{1.6}

_{m}

*f*and B

_{m}

*f*

^{2}and B

_{m}

*f*

^{2}and B

^{2}

_{m}

⇒ If V

_{a1}= V

_{a2}= 100 V and V

_{a0}= 0, then V

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200, -100 and -100 V

100, 100, 300 V

200, 100, 100 V

100, -100, 100 V

⇒ A 1 μF capacitor is connected to 12 V battery. The energy stored in the capacitor is

12 x 10

^{-6}J

24 x 10

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48 x 10

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72 x 10

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⇒ Phase modulation is commonly-used for data transmission mainly because

phase can be varied from + 180° to 180°

it is resistant to the effects of noise

demodulation is very easy

it gives highest data rates that can be transmitted over a given channel

⇒ The real part of complex dielectric constant and tanδ for a dielectric are 2.1 and 5 x 10

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1.05 x 10

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⇒ Electrical contact materials used in switches, brushes and relays must possess

high thermal conductivity and high melting point

low thermal conductivity and low melting point

high thermal conductivity and low melting point

low thermal conductivity and high melting point

⇒ Read the following statements

- Magnetic tape is a sequential device.
- Magnetic disc is a direct access device.
- Magnetic tape and disc are both sequential devices.
- Magnetic tape and disc are both direct access devices.

1 and 2 only

1 and 3 only

2 and 4 only

1, 2 and 3 only

⇒

**Assertion (A):** In angle modulation the transmitted amplitude is constant.

**Reason (R):** Angle modulation has good immunity to noise and interference.

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 correct but R is wrong

A is wrong but R is correct

⇒ An increase in ambient temperature means that maximum power rating of transistor

will increase

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may increase or decrease

may increase or remain the same

⇒ The Nyquist plo

will start from (ω = ∞) in the first quadrant and will terminate (ω = 0) in the second quadrant

will start from (ω = ∞) in the fourth quadrant and will terminate (ω = 0) in the second quadrant

will start form (ω = ∞) in the second quadrant and will terminate (ω = 0) in the fourth quadrant

will start from (ω = ∞) in the first quadrant and will terminate (ω = 0) in the fourth quadrant

⇒ Ionospheric storm causes an abnormal decrease in the critical frequency.

TRUE

FALSE

⇒ Which of the following is not a valid integer constant in C (for 16 bit)?

321

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-65321

1

⇒ The open loop frequency response of a unity feed back system is as u

20 dB and 15°

20 dB and 25°

6 dB and 15°

6 dB and 25°

⇒

**Assertion (A):** In a perfect capacitor, the current density is given by ω ∈_{0}E_{0}∈^{'}_{r}cos(ω*t* + 90°), where ∈_{r}^{'} is real part of dielectric constant.

**Reason (R):** In a perfect capacitor, dielectric losses are zero.

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 but R is false

A is false but R is true

⇒ The function Y = A B C + AB C + A B C + A BC is to be realized using discrete gates. The inputs available are A, B, C. We need a total of

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6 gates

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⇒ A current increasing at the rate of 1A/s is passed through a 1 H inductor. At

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1 Wb-turn

2 Wb-turn

4 Wb-turn

⇒ In the circuit shown, the steady state is reached with S open S is closed at

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1

2

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42828

⇒ The probability of recombination of electrons and holes in a semiconductor is proportional to

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density of electrons and holes

none of the above

⇒ A thermistor is a

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miniature resistance

heat sensitive explosive

⇒ When a UJT is used as a relaxation oscillator the current should be

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negative

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uphold

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47.7 kHz

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4770 kHz

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⇒ The current wave in figure is passed through 3 H inductor. The voltage across inductance during the period 2 <

*t*< 3 second

12 V

- 12 V

6 V

- 6 V

⇒ A clock signal coordinates the working of different flip flops.

TRUE

FALSE