Questions

Q:

A wire of copper having length I and area of cross-section A is taken and a current / is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

A) P B) < P
C) > P D) 2P
 
Answer & Explanation Answer: C) > P

Explanation:

Aluminum has a resistivity varying from 2.65 to 2.82 × 10−8 Ω m.The resistivity of copper is generally given as: 1.72 x 10-8 Ω.m.So, since resistivity of aluminium is higher than that of copper, so Power dissipated will be greater than P. this is because rest of the factors (l, A and i) are constant.

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Filed Under: Physics
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Q:

Pen name of Charles Dickens?

A) Boz B) Ba Jin
C) BB D) Cassandra
 
Answer & Explanation Answer: A) Boz

Explanation:

Charles Dickens pen name is Boz. Charles John Huffam Dickens was a British English writer and social critic of 19th century. He created some of the world's best-known fictional characters and is regarded by many as the greatest novelist of the Victorian era.

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Filed Under: Famous Personalities
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Q:

Which of the following Indian cities is known as City of Roses?

A) Hyderabad B) Kolkata
C) Mumbai D) Chandigarh
 
Answer & Explanation Answer: D) Chandigarh

Explanation:

Among the Indian cities Chandigarh is known as City of Roses.

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Filed Under: Indian Geography
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Q:

Artocarpus integra is the scientific name of ___________.

A) Guava B) Pineapple
C) Silver Oak D) Jack fruit
 
Answer & Explanation Answer: D) Jack fruit

Explanation:
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Filed Under: Biology
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Q:

Have you studied buses? What types?

Answer

There are three types of buses.


Address bus: This is used to carry the Address to the memory to fetch either Instruction or Data.


Data bus: This is used to carry the Data from the memory.


Control bus: This is used to carry the Control signals like RD/WR, Select etc.

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Subject: Hardware

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Q:

A man was slowly counting but unfortunately he miscounted. A little later he suffered a sharp pain is his back. Why?

Answer

The man want to buy a shirt went to a shop. He was counting the pins as he removed them from a new shirt. unfortunately, he missed one and wore.

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Subject: Logic Puzzles Exam Prep: Bank Exams

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Q:

Which is the only snake that builds nests?

A) Python B) Anaconda
C) Viper D) King Cobra
 
Answer & Explanation Answer: D) King Cobra

Explanation:

Which_is_the_only_snake_that_builds_nests1537938937.jpg image

 

The longest venomous snake The King Cobra is the only snake that build nests for its eggs.

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Filed Under: Animals and Birds
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Q:

The law of conservation of energy states that

A) energy can neither be created nor destroyed B) energy can either be created nor destroyed
C) energy can neither be created or destroyed D) energy can either be created or destroyed
 
Answer & Explanation Answer: A) energy can neither be created nor destroyed

Explanation:

The law of conservation of energy is a law of science which states that energy can neither be created nor destroyed - only converted from one form of energy to another.

In 1842, Julius Robert Mayer discovered the Law of Conservation of Energy.

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Filed Under: Physics
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