GATE Questions

Q:

Statements : In a recent survey report, it has been stated that those who undertake physical exercise for at least half an hour a day are less prone to have any heart ailments.

Conclusions :

a) Moderate level of physical exercise is necessary for leading a healthy life.
b) All people who do desk-bound jobs definitely suffer from heart ailments.

A) Only a follows B) Both a & b follows
C) Only b follows D) Neither a nor b follows
 
Answer & Explanation Answer: A) Only a follows

Explanation:

The statement mentions that chances of heart ailments are greatly reduced by a regular half-hour exercise. So, a follows. However, it talks of only reducing the probability which does not mean that persons involved in sedentary jobs shall definitely suffer from heart ailments. So, b does not follow.

Hence, concusion a only follows the given statement.

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Filed Under: Statement and Conclusions
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Q:

There are 41 students in a class, number of girls is one more than number of guys. we need to form a team of four students. all four in the team cannot be from same gender. number of girls and guys in the team should NOT be equal. How many ways can such a team be made ?

A) 49450 B) 50540
C) 46587 D) 52487
 
Answer & Explanation Answer: B) 50540

Explanation:

Given G + B= 41 and B = G-1
Hence, G = 21 and B = 20
Now we have 2 options,
1G and 3M
(or)
3G and 1M
(2G and 2M or 0G and 4M or 4G and oM are not allowed),

 

Total : C121×C320+C321×C120= 50540 ways.

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Filed Under: Permutations and Combinations
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Q:

Wild animals are not considered a natural resource.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

The given statement is False. Wild animals are considered as a natural resource.


Natural resources are resources taken from nature to satisfy our needs. These natural resources are:


1) Air


2) Water


3) Soil


4) Plants


5) Animals


6) Minerals


7) Forests


8) Natural Gas


9) Coal


10) Petroleum.

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Subject: General Awareness
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1 4410
Q:

The amount of Matter in an Object is

A) Weight B) Mass
C) Volume D) Space
 
Answer & Explanation Answer: B) Mass

Explanation:

Mass means the amount of matter in an object. Anything that has Mass and takes up Space is called Matter.

 

The Study of Matter and and how matter changes is called Chemistry.

 

Matter has some mass and occupies some space. Space occupied by an object is called its Volume.

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Filed Under: General Awareness
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4 4408
Q:

Persistence of vision is the principle behind

A) Telescope B) Periscope
C) Cinema D) Microscope
 
Answer & Explanation Answer: C) Cinema

Explanation:

Optical illusion is what that refers to persistence of vision with a principle that multiple images blend into a single image in human mind and what is showed in cinema.

 

Hence, Persistence of vision is the principle behind cinema.

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Filed Under: Physics
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0 4407
Q:

Which sentence contains an interjection?

A) Hey, where did I park my car! B) Well, that’s a relief.
C) Oh, now I remember where i put my wallet. D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Yes, all the above given sentences have an interjection.

 

1. Hey ! is an interjection in the sentence , Hey!, where did I park my car? 

 

2. Well is an interjection in the sentence, Well!, that's a relief.

 

3. Oh! is an interjection in the sentence , Oh!, now I remember where i put my wallet.

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Filed Under: English
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1 4406
Q:

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ?

A) 2/3 B) 1/2
C) 7/8 D) 4/5
 
Answer & Explanation Answer: B) 1/2

Explanation:

Multiples of 3 below 20 are 3, 6, 9, 12, 15, 18
Multiples of 5 below 20 are 5, 10, 15, 20
Required number of possibilities = 10
Total number of possibilities = 20
Required probability = 10/20 = 1/2.

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Filed Under: Probability
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Q:

Slip rings are usually made of

A) Aluminium B) Copper
C) Phosphor Bronze D) Carbon
 
Answer & Explanation Answer: C) Phosphor Bronze

Explanation:

A Slip ring is a ring in a dynamo or electric motor which is attached to and rotates with the shaft, passing an electric current to a circuit via a fixed brush pressing against it.

 

Slip rings are usually made of Phosphor Bronze.

 

Slip ring motors usually have a 'phase-wound' rotor. This type of rotor has a 3-phase, double-layer, distributed winding consisting of coils used in alternators. The rotor core is made up of steel laminations which have slots to accommodate formed 3-single phase windings.

slip_rings_are_usually_made_of1535005379.png image

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Filed Under: Physics
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