GATE Questions

Q:

Where are Maglev trains used?

A) London B) Russia
C) Germany D) Japan
 
Answer & Explanation Answer: D) Japan

Explanation:

Maglev trains are used in Japan, South Korea and China only.

Maglev derived from magnetic levitation using the principle of magnetic repulsion is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track as in levitation then another set to move the 'floating train' ahead at great speed taking advantage of no friction. Maglev trains are therefore quieter and smoother than conventional trains, and have the potential for much higher speeds

Despite over a century of research and development, maglev transport systems are in operation in just three countries Japan, South Korea and China.

 

Hence Maglev -- Magnetic-levitation.

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Q:

Magnetic Tape can serve as

A) Input device B) Secondary storage device
C) Output device D) None of the above
 
Answer & Explanation Answer: B) Secondary storage device

Explanation:

Related image

Magnetic tape can serve as a Secondary storage unit. It is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film.

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Q:

Ultimate strength to cement is provided by

A) Di-calcium silicate B) Tricalcium silicate
C) Tetra calcium alumino ferrite D) Tri-calcium aluminate
 
Answer & Explanation Answer: A) Di-calcium silicate

Explanation:
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Q:

What stops one branch of government from becoming too powerful?

A) State governments B) Every 4 years of President election
C) Members of congress D) Checks and Balances
 
Answer & Explanation Answer: D) Checks and Balances

Explanation:

A procedure or method called Checks and Balances stops one branch of government from becoming too powerful.

  • In the United States, there are three branches of government: The Executive, Legislative, and Judicial.

 

  • Each has its own responsibilities and at the same time they work together to make the country run smoothly and to assure that the rights of citizens are not ignored or disallowed.

 

  • There is a clear separation of powers between them.

 

  • Checks and Balances limit the power within each branch.

 

  • Each branch can stop and/or override processes within other branches in manners that are outlined in federal laws, regulations, and the constitution.

 

  • This way, their powers are balanced because the branches of government have the responsibility to check each other.
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Q:

Materials that allow electricity to flow are called

A) Insulators B) Conductors
C) Electron flows D) Stimulators
 
Answer & Explanation Answer: B) Conductors

Explanation:

Materials that allow electricity to flow are called electrical conductors and that materials which does not allow electricity to flow are called Insulators.

materials_that_allow_electricity_to_flow_are_called1535107310.png image

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Q:

If cost price of an article is 75% of its selling price, then what will be the profit percentage?

A) 23.47 B) 25
C) 33.33 D) 20
 
Answer & Explanation Answer: C) 33.33

Explanation:
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Q:

What least number must be substracted from 627349 so that the remaining number is divisible by 15 ?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: D) 4

Explanation:

On dividing 627349 by 15, we get remainder = 4.
Therefore, the obtained remainder is the least number to be subtracted from the given number so that the the mnumber is divisible by 15.
Here 4 is the least number to be subtracted from 627349 so that it is divisible by 15.

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Q:

I am a 5 letter word.

I am normally below you. If you remove my 1st letter, you'll find me above you. If you remove my 1st & 2nd letters, you can't see me.

What am I?

Answer

Firstly, I focussed on "If you remove my 1st & 2nd letters, you can't see me". The first thing that comes to mind which we can’t see is the "AIR".


 


So now, what 4 letter words can be formed ending with "AIR"? Think of all the words from A to Z, considering which one lies above you. That is how we get to "HAIR".


 


Now, which 5 letter word can be formed ending with "HAIR"? Starting with A to Z, we reach "CHAIR" and also, it lies below us.


 


And the required answer is "CHAIR".

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