General Knowledge Questions

Q:

Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes

 

A) 2R B) R/2
C) 5R/4 D) 3R/4
 
Answer & Explanation Answer: C) 5R/4

Explanation:

So, resistance of Wire 2 is R/4 as radius is half of wire 1, so area would be 4 times of wire 1.

Now for resistance in series. R= R1 + R2.

Therefore, Final R= R + R/4 = 5R/4

 

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Q:

Synchronous motor can operate at

A) Lagging power factor only B) Unity power factor only
C) Leading power factor only D) At any power factor
 
Answer & Explanation Answer: D) At any power factor

Explanation:

synchronous motor can operate at lag lead and unity power factor also why because it is mainly depends on excitation

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Q:

Backup means

A) Protecting data by copying it from the original source to a different destination B) Accessing data on tape
C) Filtering old data from the new data D) Adding more components to your network
 
Answer & Explanation Answer: A) Protecting data by copying it from the original source to a different destination

Explanation:

Protecting data by copying it from the original source to a different destination is called as Backup. When an original data is lossed, to restore the information by copying the data from the source to other destination is called as Backup or Data backup.

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Q:

DNA is a long chain made of repeating units called aminoacids.

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

Explanation:

The repeating units that are used to form the helical DNA structure are called nucleotides.

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Q:

Middle latitude cyclones are fueled by? 

A) air high in the atmosphere B) polar continental air masses
C) energy from falling precipitation D) All of the above
 
Answer & Explanation Answer: A) air high in the atmosphere

Explanation:

Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth.

 

Middle latitude cyclones are fueled by air high in the atmosphere.

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Q:

A conception of right and wrong is

Answer

A conception of right and wrong is the definition of Ethics.


ethics1532426546.jpg image


Ethics are societal norms adopted by a group which deals with the fundamental human relation ships.

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Q:

Acceptable noise level for human ear

A) > 85 db B) = 85 db
C) < 85 db D) None of the above
 
Answer & Explanation Answer: C) < 85 db

Explanation:

Sound intensity or level is measured by a unit called a decibel. An 85 decibel noise level is not a safe standard for the public.

 

Hence, Acceptable noise level for human ear is less than 85 db.

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Q:

Which city has been named as the world's most liveable city for the seventh year in a row by The Economist in its Global Liveability Report ?

A) Hyderabad B) Vienna
C) Melbourne D) New Delhi
 
Answer & Explanation Answer: C) Melbourne

Explanation:
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