GATE Questions

Q:

Sum of factors of 4b2c2-(b2+c2-a2)2 is 

A) a + b + c B) 2(a + b + c)
C) 0 D) 1
 
Answer & Explanation Answer: B) 2(a + b + c)

Explanation:
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Q:

At the center of the sun, fusion converts hydrogen into

A) Helium B) Plutonium
C) Water D) Carbon
 
Answer & Explanation Answer: A) Helium

Explanation:

At the center of the sun, nuclear fusion converts hydrogen into helium, energy, and neutrinos. Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

At_the_center_of_the_sun,_fusion_converts_hydrogen_into1558676073.jpg image

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Filed Under: Physics
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1 2402
Q:

Study the question and all the three statements given and decide whether any information provided in the statements are redundand and can be dispensed with while answering the questions.

Question : 

What is the rate of interest per year ?

Statements :

1. The amount invested is Rs. 6000.
2. The amount becomes Rs. 6741.60 in 2 years at compound interest.
3. The difference between compound interest and simple interest in 2 years is Rs. 21.60.

A) Only 3 B) Both 2 & 3
C) Any two of (1, 2 & 3) D) None
 
Answer & Explanation Answer: C) Any two of (1, 2 & 3)

Explanation:

Using Both 1 & 2 statements we get the rate of interest as in (1) we have given principle amount and in (2) compound interest for 2 years. By this data we get the rate%.

Using Both 1 & 3 statements we can get the rate% as we have principle amount & difference between compound interest and simple interest in 2 years.

Using Both 2 & 3 statements we get compound interest & simple interest by which we get principle amount. So that we can calculate %rate.

Hence by using any two of the three statements(1,2&3) we get rate of interest.

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Filed Under: Statement and Conclusions
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5 2400
Q:

Which of the following statements about monsoons are correct?

A) Monsoons can cause devastating landslides and floods. B) Heavy monsoons increase agricultural output.
C) A weak monsoon season can lead to drought and starvation. D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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Filed Under: Indian Geography
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Q:

Which is evidence that supports the dynamo theory?

A) Earth's outer core contains liquid that conducts electricity B) Earth's core contains a large amount of iron
C) Granite and basalt conduct electricity D) Convection occurs in Earth's inner core
 
Answer & Explanation Answer: B) Earth's core contains a large amount of iron

Explanation:

In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.

Earth's crust core contains a large amount of iron and nickel is the evidence of the dynamo theory.

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Filed Under: Physics
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Q:

Two cars, a Maruthi and a Toyato, start at the same time in opposite directions from two distinct points A and B. Starting from A, the Maruthi reaches B in 6 hrs 20 minutes and the Toyato starting from B, reaches A in 4 hrs 45 minutes. What is the speed of the Toyato, if the speed of the Maruthi is 60 Km/h?

A) 75 kmph B) 80 kmph
C) 86 kmph D) 90 kmph
 
Answer & Explanation Answer: B) 80 kmph

Explanation:

Let the distance between A and B = D

Given the speed of maruthi = 60 kmph

Maruthi reaches from A to B in 6 hrs 20 min = 6 + 20/60 = 6 1/3 hrs

Now, the distance between A & B = D = speed x time = 60 x 19/3 = 380 kms

As the distance is same for toyato also,

given time for toyato = 4 hrs 45 min = 4 + 45/60 = 4 3/4 = 19/4 hrs

speed of toyato = distance/time = 380/19/4 = 380 x 4/19 = 80 kmph.

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Filed Under: Time and Distance
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7 2389
Q:

A test to determine processor speed is?

A) a gesture B) flat panel
C) a benchmark D) None of the above
 
Answer & Explanation Answer: C) a benchmark

Explanation:

The total number of instructions a computer executes per second is called as its processors speed. 

 

Maximum the processor's speed minimum the time for execution.

 

A test to determine processor speed is a benchmark.

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Filed Under: Computer
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4 2386
Q:

Recently deleted files are stored in

A) Taskbar B) My Computer
C) Recycle Bin D) Desktop
 
Answer & Explanation Answer: C) Recycle Bin

Explanation:

Deleted files are not permanently removed from the hard drive or the computers memory. Before they are permanently removed from the system they are stored in Recycle Bin. Recycle Bin is a folder or directory where deleted items are temporarily stored. It is also called as trash.

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