GATE Questions

Q:

What is conversion operator ?

Answer

Class can have a public method for specific data type conversions.
for example:
class B
{
double value;
public  B(int i )
operator double()
{
return value;
}
};
B BObject;
double i = BObject; // assigning object to variable i of type double.
now conversion operator gets called to assign the value.

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11 4752
Q:

A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ?

A) 8 B) 6
C) 5 D) 3
 
Answer & Explanation Answer: D) 3

Explanation:

Given teacher drinks 9 ltr
Let number of boys be 'A'.
Let number of girls be 'B'.
Boy drinks 7 ltr and girl drinks 4 ltr
After class total water consumed = 42 ltr
Then,
9 + 7A + 4B = 42
=> 7A + 4B = 33
By trial and error method,
The only integers which satisfy the equation is A = 3 and B = 3
Therefore, number of girls in the class = 3.

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Filed Under: Simplification
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6 4751
Q:

The CPU consists of which two parts?

A) ALU B) Control unit
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

The Central Processing Unit, consists of Arithmetic and logic unit and Control unit.

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Filed Under: Computer
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8 4749
Q:

Heat transfer by radiation mainly depends upon

A) Kind and extent of its surface B) Its temperature
C) Nature of the body D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Heat transfer through radiation takes place in form of electromagnetic waves mainly in the infrared region. It depends on nature of the body, its temperature and kind & extent of its surface.

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Filed Under: Physics
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4 4749
Q:

3.2% of 500 × 2. 4% of ? = 312

A) 812.5 B) 829.75
C) 749.85 D) 799.5
 
Answer & Explanation Answer: A) 812.5

Explanation:

Given 3.2% of 500 × 2. 4% of ? = 312Then,3.2 x 500100 x 2.4 x ?100 = 31216 x 2.4x?100 = 3129.6 x ?25 = 3129.6 x ? = 7800? = 78009.6? = 812.5

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Filed Under: Percentage
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7 4748
Q:

Solve this logical Math puzzle?

Solve_this_math_puzzles1542974183.jpg image

A) 1 B) 0
C) 10 D) 5
 
Answer & Explanation Answer: A) 1

Explanation:

From the given data,

11+ 11 = 4 => 1 + 1  +  1 + 1 = 4

12 + 12 = 6 => 1 + 2  + 1 + 2 = 6

13 + 1 3 = 8 => 1 + 3  + 1 + 3 = 8


Similarly,

14 + 14 = 10 => 1 + 4  +  1 + 4  = 5 + 5 = 10

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Filed Under: Math Puzzles
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15 4746
Q:

Synonym of 'Beautiful'?

A) Alluring B) Ugly
C) Disgusting D) Loathsome
 
Answer & Explanation Answer: A) Alluring

Explanation:

Beautiful means good looking, having pleasing personality, glamourous, charming.

Synonyms of Beautiful are handsome, attractive, alluring, cute, fair,...

 

Hence, in the given options Synonym of 'Beautiful' is Alluring.

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Filed Under: English
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2 4741
Q:

In which year was the Supreme Court of India established?

A) 1951 B) 1949
C) 1950 D) 1947
 
Answer & Explanation Answer: C) 1950

Explanation:

The Supreme Court of India was established in the year 1950.

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Filed Under: Indian Politics
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22 4740