Questions

Q:

Working of safety fuses depends upon

1. magnetic effect of the current

2. chemical effect of the current

3. magnitude of the current

4. heating effect of the current

Select the correct answer using the code given below.

 

A) 1, 2, 3 and 4 B) 1, 2 and 3 only
C) 3 and 4 only D) 4 only
 
Answer & Explanation Answer: C) 3 and 4 only

Explanation:

An electric fuse is a device which is used to limit the current in an electric circuit. The fuse safeguards the circuit and the electrical appliances from being damaged.

The fuse wire is generally an alloy of lead and tin. It has a low melting point and breaks the circuit if the current exceeds a safe value. The thickness and length of the fuse wire depends on the maximum current allowed through the circuit.

It is connected in series in the beginning of the electric circuits.

If too many electrical appliances of high power rating (like electric iron, water heater etc) are switched on at the same time, they draw an extremely large current from the circuit. This condition is called overloading and it can cause overheating of the wiring and lead to a fire. (heating effect and magnitude of the current)

 

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4 70035
Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives.


Manja, or the glass-coated string used for flying kites, not only poses threat to humans, animals and birds but also to trees. A study by the country's oldest botanical garden has revealed that it poses a great threat to trees. But how can a snapped string struck in a tree kill the tree? Apparently, it does so by allying with the creepers in the garden.


A research paper by three scientists of the Acharya Jagdish Chandra Bose Indian Botanic Garden, located in West Bengal's Howrah district, illustrates in detail how the manja, in collusion with climbers, does the damage. "The abandoned, torn kite strings act as an excellent primary supporting platform for the tender climbers, giving easy passage to reach the top of the trees. Lateral branches from the top of the climber and other accessory branches from the ground reaches the top taking support of the first climber, completely covers the treetop, thus inhibiting the penetration of sunlight," says the research paper.


What would be the acronym for India's oldest botanical garden?

 

A) AJCBIBG B) AJCBBGI
C) AJBCIBG D) AJBCBGI
 
Answer & Explanation Answer: A) AJCBIBG

Explanation:
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0 69963
Q:

Rearrange the parts of the sentence in correct order.

 

Logocentrism is the search for a

 

P : rational language that is able to

Q : all its aspects perfectly and accurately

R : know and represent the world and

 

 

A) RPQ B) PQR
C) QPR D) PRQ
 
Answer & Explanation Answer: D) PRQ

Explanation:
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0 69911
Q:

Select the antonym of

 

astringe

 

A) liberate B) constringe
C) circumscribe D)  tauten
 
Answer & Explanation Answer: A) liberate

Explanation:
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1 69857
Q:

Rearrange the parts of the sentence in correct order.

Despite this high-­level political

P-­have achieved little
Q-­these summits
R-­attention, and fanfare,

 

A) QRP B) RQP
C) PRQ D) PQR
 
Answer & Explanation Answer: B) RQP

Explanation:
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1 69805
Q:

Select the antonym of

 

wary

 

A) frugal B) leery
C) prudent D) inattentive
 
Answer & Explanation Answer: D) inattentive

Explanation:
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0 69802
Q:

Select the synonym of

 

panorama

 

A) puny B) wee
C) diminutive D) spectacle
 
Answer & Explanation Answer: D) spectacle

Explanation:
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0 69776
Q:

Read each sentence to find out whether there is any error in any part

I am senior(a) than him(b) by two years(c). No error.(d)

A) a B) b
C) c D) d
 
Answer & Explanation Answer: B) b

Explanation:

With certain words like, be senior to, be junior to, be superior to, be inferior to, etc. is always followed by ‘to’. Thus, the correct sentence would be, ‘I am senior to him by two years’.

 

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1 69737