GATE Questions

Q:

What molecule makes the trunk of a tree sturdy?

A) Disaccharide B) Fructose
C) Cellulose D) Glucose
 
Answer & Explanation Answer: C) Cellulose

Explanation:

Cellulose is closely related to sugar and rated as a carbohydrate, which means that it is a compound of carbon, hydrogen and oxygen. The woody trunk of a tree is no more than dead cell walls.

tree1533617490.jpg image

Trunk of a tree refers to the main wooden axis of a tree that supports the branches and is supported by and directly attached to the roots. The molecule that makes it sturdy is cellulose.

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Q:

Synchronous motor can operate at

A) Lagging power factor only B) Unity power factor only
C) Leading power factor only D) At any power factor
 
Answer & Explanation Answer: D) At any power factor

Explanation:

synchronous motor can operate at lag lead and unity power factor also why because it is mainly depends on excitation

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Filed Under: General Awareness
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Q:

Statement: There was a spurt in criminal activities in the city during the recent festival season.
Courses of action:
a. The police should immediately investigate into the causes of this increase.
b. In future the police should take adequate precaution to avoid recurrence of such situation during festival.
c. The known criminals should be arrested before any such season.

A) Both a and b follows B) Only c follows
C) Only a follows D) Both b and c follows
 
Answer & Explanation Answer: A) Both a and b follows

Explanation:

The police ought to find out the lackenings in existing security arrangements and make up for these inadequacies to strengthen security and thus prevent criminal activities in the forthcoming festival. So, both a and b follow. Arresting the known criminals does not ensure safety, for a novice can also indulge in crime. So, c does not follow.

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Q:

5 Digits Number?

What 5-digit number has the following features:

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.

Answer

We can make an equation:


3(100000 + x) = 10x+1


(Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number)


Solving this gives:


10x+1 = 3(100000 + x)
10x+1 = 300000 + 3x
10x = 299999 + 3x
7x = 299999
x = 299999/7 = 42857


The answer is 42857 (142857 is three times smaller than 428571).

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Q:

Which gas is used for the preparation of Soda water?

A) Carbon Dioxide B) Oxygen
C) Hydrogen D) Ammonia
 
Answer & Explanation Answer: A) Carbon Dioxide

Explanation:
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Q:

Choose what replaces '?' in the following figure ?

creative111486456294.jpg image

A) Q B) O
C) M D) N
 
Answer & Explanation Answer: D) N

Explanation:

The alphabetical value of the letters in the left hand column follows through the sequence of Prime Numbers, with the letters in the right hand column representing the corresponding reverse alphabetical values. So,

M = Reverse of M = N.

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Q:

Statement: It is estimated that about twenty lakh people will visit the city during the ensuing festival.
Courses of action:
a. The civic authority should monitor the crowd and restrict entry of the people beyond a manageable number.
b. The local police authority should be put on high alert to maintain law and order during the festival.
c. All the hospitals in the city should be put on high alert in case of any eventuality.

A) Only a follows B) Both b & c follows
C) Only c follows D) Both a and b sufficient
 
Answer & Explanation Answer: B) Both b & c follows

Explanation:

Clearly, People cannot be deprived of enjoying the festival for lack of arrangements. Also, it becomes necessary to deploy police to regulate big crowds and avert any mishap in public gatherings. Further, it costs nothing but might prove useful to put hospitals on alert to be ready to provide quick medical aid to patients in case of any eventuality. So, both b and c follow.

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Q:

I have legs, but i cannot walk. Who am I?

A) Dragon flies B) Prawns
C) House flies D) All of the above
 
Answer & Explanation Answer: A) Dragon flies

Explanation:

Dragon flies have legs but they cannot walk.

dragonfly1532517355.jpg image

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