Q:

The attenuation in optical fibre is mainly due to

A) Scattering	B) Absorption
C) Both (a) and (b)	D) Neither absorption nor scattering

Answer & Explanation Answer: A) Scattering

Explanation:

The reason for transmitting data over optical fibers, is because the speed of data transmission through optical wires are equal to the speed of light. The intense speed of data transfer speed, has lead to the use of optical fibers. The optical fiber uses the technology of transferring light beams, from one end to the other end of optical cables. The attenuation in optical fiber is due to Scattering. The reason why scattering is caused, due to the folding, in the wire.

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Filed Under: Physics
Exam Prep: Bank Exams , CAT

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Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

But we expect them (to performs) better than all others.

A) to performing	B) perform
C) to perform	D) no improvement

Answer & Explanation Answer: C) to perform

Explanation:

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Filed Under: English
Exam Prep: Bank Exams , GRE , TOEFL

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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.

You have to finish painting this fence by Friday.

A) This fence has to be finished painting by you by Friday.	B) This fence is to be finishing painted by you by Friday.
C) Painting of this fence has to be painted by you by Friday.	D) By Friday you will have finished painting the fence.

Answer & Explanation Answer: A) This fence has to be finished painting by you by Friday.

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

Showing a skilful use of underhand tactics to achieve goals

A) Scrupulous	B) Veracious
C) Authentic	D) Devious

Answer & Explanation Answer: D) Devious

Explanation:

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Q:

One who goes on a journey to a holy place -

A) Saint	B) Pilgrim
C) Hermit	D) Mendicant

Answer & Explanation Answer: B) Pilgrim

Explanation:

One who goes on a journey to a holy place - Pilgrim.

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Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

The footpath (had been hijacked) by gigantic blue-and-green barricades.

A) have been hijacked	B) have being hijacked
C) had been hijacking	D) no improvement

Answer & Explanation Answer: D) no improvement

Explanation:

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Q:

Prime Minister Narendra Modi inaugurated India's longest rail-road bridge Bogibeel Bridge in which state?

A) Tripura	B) Sikkim
C) Assam	D) Arunachal Pradesh

Answer & Explanation Answer: C) Assam

Explanation:

* Prime Minister Narendra Modi on 25th Dec 2018 inaugurated the 4.94 km long Bogibeel Bridge in Assam.
* It is India’s longest rail-cum-road road bridge, on the river Bramhaputra.
* The bridge is constructed at an estimated cost of 5,800 crore rupees.
* It is situated 17 km downstream of Dibrugarh city in Assam.

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Filed Under: Inventions

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Q:

What is the value of (tan45° + 1/√2) ?

A) 5/√3	B) 7/2√3
C) (√2+1)/√2	D) 4/√3

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