GATE Questions

Q:

three_resistors_are_arranged_in_a_circuit_as_shown_above1559105724.PNG image

Three resistors are arranged in a circuit as shown above. The battery has an unknown but constant emf ε and a negligible internal resistance.

Now, determine the equivalent resistance of the three resistors.

A) 12 Ω B) 10 Ω
C) 16 Ω D) 15 Ω
 
Answer & Explanation Answer: A) 12 Ω

Explanation:

From the given circuit,

three_resistors_are_arranged_in_a_circuit_as_shown_above1559105964.PNG image

The resistors R1 and R2 are in parallel connection and R3 is in series with R1 & R2

The equivalent resistance of R1 and R2 is

Req = (12 × 4)/(12 + 4) = 3 Ω.

Adding R3 in series with the pair gives

R = Req + 9

R = 3 + 9

R = 12 Ω.

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Filed Under: Physics
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2 1909
Q:

What was the motto of the organization BSF?

A) Duty unto Death B) Service Before Self
C) Protection & Security D) Service and Loyalty
 
Answer & Explanation Answer: A) Duty unto Death

Explanation:

BSF - Border Security Force

 

The motto of the organization BSF is "Duty unto Death."

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Filed Under: General Awareness
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2 1908
Q:

Smallest prime number greater than 200?

A) 201 B) 205
C) 211 D) 203
 
Answer & Explanation Answer: C) 211

Explanation:

From the trial and error method of division,

201 is divisible by 3

205 is divisible by 5

203 is divisible by 7

 

Hence, after eliminating three options, remained is 211 and is divisible by only 1 and itself. 

 

Therefore, 211 is the smallest prime number greater than 200.

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Filed Under: Arithmetical Reasoning
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1 1907
Q:

A word arranging device rearranges words step-by-step in a particular order according to set of rules. The device stops when the final result is obtained.
Input: but going for crept te light sir
Step 1: crept but going for te light sir
Step 2: crept going light but for te sir
Step 3: crept going light but for sir te
And Step 3 is the last step for this input. Now, find out an appropriate step in the following question following the above rules.

Question:
Input: more fight cats cough sough acts idea
What will be the last step for this input ?

A) cough fight sough acts cats idea more B) cough fight sough acts cats more idea
C) cough more fight sough acts idea cats D) none of these
 
Answer & Explanation Answer: A) cough fight sough acts cats idea more

Explanation:

Carefully obsrving the given arrangement, we find the following pattern:
We observe that,first all the words with the highest number of letters are arranged in the alphabetical order, followed by the words with the second highest number of letters and so on.However, the position of only one word is altered at each step.
Input: more fight cats cough sough acts idea
Step1: cough more fight cats sough acts idea
Step2: cough fight more cats sough acts idea
Step3: cough fight sough more cats acts idea
Step4: cough fight sough acts more cats idea
Step5: cough fight sough acts cats more idea
Step6: cough fight sough acts cats idea more

 

Hence, the answer is A

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Filed Under: Sequential Output Tracing
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9 1905
Q:

The primary agent of contact metamorphism is

A) Temperature B) Pressure
C) Weathering D) Flowing water
 
Answer & Explanation Answer: A) Temperature

Explanation:

The primary agent of contact metamorphism is heat or temperature.

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Filed Under: Physics
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2 1903
Q:

Cobalt 60 is used for cancer treatment it emmits which rays?

A) Alpha B) Beta
C) Gamma D) X rays
 
Answer & Explanation Answer: C) Gamma

Explanation:

Cobalt therapy or cobalt-60 therapy is the medical use of gamma rays from the radioisotope cobalt-60 to treat conditions such as cancer.

 

Cobalt 60 is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. It is produced artificially in nuclear reactors.

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Filed Under: General Science
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4 1903
Q:

Two angles whose sum is 90 are

A) Supplementary angles B) corresponding angles
C) Complimentary angles D) Alternate angles
 
Answer & Explanation Answer: C) Complimentary angles

Explanation:

Complimentary angles are those two angles whose sum is 90 whereas two angles whose sum is 180 are called Supplementary angles.

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Filed Under: Arithmetical Reasoning
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2 1901
Q:

Find the correctly spelt word?

A) Addulation B) Ominous
C) Adlation D) Omineous
 
Answer & Explanation Answer: B) Ominous

Explanation:

Ominous is the correctly spelt word in the given options. It means that giving the worrying impression that something bad is going to happen.

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Filed Under: English
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1 1899