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Q:

Two electric bulbs marked 25W – 220V and 100W – 220V are connected in series to a 440Vsupply. Which of the bulbs will fuse?

A) 25 W B) Both
C) 100 W D) Neither
 
Answer & Explanation Answer: A) 25 W

Explanation:

Resistances of both the bulbs are

 

R1=V^2/P1 = 220^2/25

 

R2 = V^2/P2 = 220^2/100

 

Hence  R1gt ; R2

 

When connected in series, the voltages divide in them in the ratio of their resistances. The voltage of 440 V devides in such a way that voltage across 25 w bulb will be more than 220 V. Hence 25 w bulb will fuse.

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Filed Under: Physics
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Q:

An advanced water management system of Harappan times has been unearthed at

A) Dholavira B) Lothal
C) Kalibangan D) Alamgirpur
 
Answer & Explanation Answer: A) Dholavira

Explanation:
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Q:

Improve the bracketed part of the sentence.

My brother is indifferent (about) whatever I say.

A) in B) of
C) to D) No improvement
 
Answer & Explanation Answer: C) to

Explanation:
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Exam Prep: Bank Exams

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Q:

The ratio of cost price and marked price of an article is 2:3 and ratio of percentage profit and percentage discount  is 3:2 . what is the discount percentage?

A) 16.66% B) 20%
C) 25% D) 33.33%
 
Answer & Explanation Answer: A) 16.66%

Explanation:

     CP : MP = 2x : 3x

 => Profit = x

 

( %) profit : (%) discount = 3:2

 

Let  CP = 2000,  SP = 300

 

But  3x100×200 + 2x100×300 = 100

 

=>  x = 8.33%

 

Discount 2x = 16.66% 

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Q:

Select the antonym of

snag

A) hurdle B) boon
C) bug D) glitch
 
Answer & Explanation Answer: B) boon

Explanation:
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Q:

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

That Brutus, who was his trusted friend(a) had attacked on him(b) caused heartbreak to Julius Caesar(c). No error.(d)

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

Explanation:

‘Attacked on him’ is the incorrect form of phrasal verb that needs to be replaced with ‘Attacked him’ to make the sentence correct. This is because; ‘Attack’ is not followed by any preposition. Thus, the correct sentence would be, ‘That Brutus, who was his trusted friend had attacked him caused heartbreak to Julius Caesar’.

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Q:

The term _____ designates equipment that might be added to a computer system to enhance its functionality

A) digital device B) system add-on
C) disk pack D) peripheral device
 
Answer & Explanation Answer: D) peripheral device

Explanation:
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Q:

Rocket works on the principle of conservation of

 

A) Momentum B) Mass
C) Velocity D) Energy
 
Answer & Explanation Answer: A) Momentum

Explanation:

Rocket works on the principle of conservation of momentum. The rockets gain momentum equal to the momentum of the gas expelled from the engine, but in the opposite direction.

 

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