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Q1. | Match the following:
| ||||||||||||||||||||

A. | A-1, B-2, C-3, D-4 [Wrong Answer] | ||||||||||||||||||||

B. | A-4, B-3, C-2, D-1 [Wrong Answer] | ||||||||||||||||||||

C. | A-3, B-2, C-1, D-4 [Wrong Answer] | ||||||||||||||||||||

D. | A-3, B-2, C-4, D-1 [Correct Answer] | ||||||||||||||||||||

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

⇒ If number of information bits is 11, the number of parity bits in Hamming code is

5

4

3

2

⇒ As a compared to a CB amplifier, a CE amplifier has

lower current amplification

higher current amplification

lower input resistance

higher input resistance

⇒ (FE35)

_{16}XOR (CB15)

_{16}is equal to

(3320)

_{16}

(FE35)

_{16}

(FF50)

_{16}

(3520)

_{16}

⇒ The current source in figure, can be replace

a voltage source of 20 V in series with 5 ohm resistance

a voltage source of 16 V in series with 4 ohm resistance

a voltage source of 20 V in series with 4 Ω resistance

a voltage source of 16 V in series with 5 Ω resistance

⇒ A bistable multivibrator

has no stable state

has one stable state

has two stable state

none of the above

⇒ Schmitt trigger is used for wave shaping.

TRUE

FALSE

⇒

Match the following:

List I (DOS commands) | List II (Meaning) | ||
---|---|---|---|

A. | ATTRIB | 1. | Displays all directories and subdirectories |

B. | SCAN DISK | 2. | Moves files to another director |

C. | MOVE | 3. | Checks the status of disc |

D. | TREE | 4. | Hides a file |

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

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

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

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

⇒ The system in the given figure

good gain and phase margins

good gain margin and poor phase margin

poor gain and phase margins

poor gain margin but good phase margin

⇒ The Boolean expression (A + B) (A + C) (B + C) simplifies to

(A + B) C

(A + B) C

(A + B) C

none of these

⇒ Which of the following waves do not exist in waveguides?

TE waves

TM waves

TE and TM waves

TEM waves

⇒

**Assertion (A):** The optical dielectric constant (i.e., ε_{r} at optical frequencies)of ionic dielectrics is less than static dielectric constant.

**Reason (R):** At optical frequencies, P_{i} = 0.

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

⇒ In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is

2 and 7

3 and 7

1 and 6

3 and 6

⇒ The trigonometric Fourier series for the waveform

*f(t)*shown below con

only cosine terms and zero value for the dc component

only cosine terms and a positive value for the dc component

only cosine terms and a negative value for the dc component

only sine terms and a negative for the dc component

⇒ 10's complement of 16

_{10}is

83

_{10}

84

_{10}

38

_{10}

48

_{10}

⇒ The network has 10 nodes and 17 branches. The number of different node power voltages would be

7

9

10

45

⇒ In a display specified as 600 x 400 the number of pixels across the display screen is

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400

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either (a) or (b)

⇒ F

_{2}layer of atmosphere extends from

250 km to 400 km

150 km to 250 km

50 km to 150 km

15 km to 50 km

⇒ System

causal

stable

non causal

anticausal

⇒ In a TV, the output from RF tuner is about

1 μV

1000 μV

100 μV

0.5 μV

⇒ Consider the following

line 25

line 35

any of the lines 15 or 25, 35

⇒ Two resistors

*R*

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*R*

_{2}= 75 Ω ± 5% are connected in series. The total resistance is

111 ± 0 Ω

111 ± 2.778 Ω

111 ± 5.55 Ω

111 ± 7.23 Ω

⇒ If the memory chip size is 256 x 1 bits, then the number of chips required to make up 1 kB (1024) bytes of memory is

32

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⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 1000 kHz will be

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1455 kHz

1910 kHz

545 kHz

⇒ If a RAM has 34 bits in its MAR and 16 bits its MAR, then its capacity will be

32 GB

16 GB

32 MB

16 MB

⇒ A waveguide section in a microwave circuit acts as

LP filter

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HP filter

Band stop filter

⇒ Gain stability in an oscillator can bs achieved by

providing negative feedback

providing positive feedback

using low Q circuits

controlling the gain

⇒ Consider the following expressions which indicate the step or impulse response of an initially relaxed system

- [5 - 4
*e*^{-2t}]*u*(*t*) - [
*e*^{-2t}+ 5]*u*(*t*) *d*(*t*) + 8*e*^{-2t}*u*(*t*)*d*(*t*) + 4*e*^{-2t}*u*(*t*)

1 and 3

1 and 4

2 and 4

2 and 3

⇒ If word length is 16 bits the decimal equivalent of largest number which can be stored is

32767

32766

16383

16384

⇒ For a waveguide, which of the following statements is wrong?

It is usually made of brass or aluminium

It is usually rectangular or circular in shape

The dielectric region is usually air

The wall thickness is very small as compared to skin depth

⇒ A transmitted using AM has in modulated carrier output power of 10 KW and can be modulated to a maximum depth of 90% by a sinusoidal modulating voltage without causing overloading. Find the value to which an modulated carrier power can be increased without resulting in overloading if the maximum permitted modulating index is 40%

14 KW

12.96 KW

26.96 KW

2.96 KW