Questions

Q:

Brightness of bulb depends on voltage or current?

A) Current B) Voltage
C) Both A & B D) None
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Brightness of bulb depends on both voltage and current. The brightness depends on power.

Since we know that  Power (P) = Voltage x Current = V I

So whether you increase the current or the voltage the brightness will increase.

 

Example Illustration:

 If you connect a long bulb and a round bulb in series, the long bulb glows but the round bulb does not. Both of them have the same current flowing through them (they are in series) but the long bulb has a greater voltage across it because it has more resistance (even though V= IR is not obeyed exactly, voltage drop does depend on the resistance). If you connect a round bulb and a long bulb in parallel, however, it is the round bulb that is brighter because now the voltage across both bulbs is the same but the current is larger through the round bulb (smaller resistance).

 

Hence, the brightness of a bulb depends on power i.e, both voltage and current.

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

31 28287
Q:

Reang (Bru) tribe belongs to which Indian State?

 

A) Assam B) Tripura
C) Nagaland D) Meghalaya
 
Answer & Explanation Answer: B) Tripura

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography
Exam Prep: Bank Exams

2 28279
Q:

Between small and large human intestine which one is longer?

 

A) small intestine B) Large intestine
C) Both are equal in length D) Depends on male or female
 
Answer & Explanation Answer: A) small intestine

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Inventions
Exam Prep: Bank Exams

1 28101
Q:

Match the characteristics with their market structure:

(a) demand will tend to be inelastic
(b) Firm has control over quantity of output but it must take into account reactions of competitors

 

A) (a) Pure Monopoly, (b) Oligopoly B) (a) Pure Monopoly, (b) Monopolistic Competition
C) (a) Pure Competition, (b) Oligopoly D) (a) Monopolistic Competition, (b) Pure Competition
 
Answer & Explanation Answer: A) (a) Pure Monopoly, (b) Oligopoly

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian Economy
Exam Prep: Bank Exams

1 28077
Q:

The First Mechanical Computer Designed by Charles Babbage was called?

A) Super Computer B) Abacus
C) Calculator D) Analytical Engine
 
Answer & Explanation Answer: D) Analytical Engine

Explanation:

Computer was invented by Charles Babbage.

The First Mechanical Computer Designed by Charles Babbage, a British mathematician was called as Analytical Engine which resembles today's modern machines  between 1833 and 1871.

Report Error

View Answer Report Error Discuss

145 28038
Q:

Consider the following statements:

1. Inflation in India continued to be moderate during 2017-18

2. There was significant reduction in food inflation, particularly pulses and vegetables during the period.


Which of the statements given above is/are correct?

A) 1 only B) 2 only
C) Both 1 and 2 D) Neither 1 nor 2
 
Answer & Explanation Answer: C) Both 1 and 2

Explanation:

According to the Survey, inflation in the country continued to moderate during 2017-18 with the CPI based headline inflation averaging 3.3 per cent during the period --the lowest in the last six financial years

Retail inflation fell to a record low of 2.18% in May as prices of kitchen staples like vegetables and pulses declined sharply although there was a marginal spike in fruit rates.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Economy
Exam Prep: Bank Exams

1 28015
Q:

A F Z U G L T _ 

Find the next letter in the above given letter series?

A) K B) M
C) O D) Q
 
Answer & Explanation Answer: C) O

Explanation:

Given series is A F Z U G L T _

Starts with A

A + 5 letters = F

go to end of alphabet= Z

Z - 5 letters = U

from F go one more to G + 5 letters = L

from U go one back to U, T - 5 letters = O

 

Second Method ::

Change the letters to their corresponding number.

A=1

B=2

C=3

...

Z=26

A F Z U G L T _

1 6 26 21 7 12 20 ?

Look at the pattern: the 1st and 3rd numbers = 27, 1+26

the 2nd and 4th numbers = 27, 6+21

the 5th and 7th numbers = 27,

so the 6 and 8th would also equal 27.

27 - 12 = 15,

so the letter is O.

Report Error

View Answer Report Error Discuss

75 28000
Q:

Saraswati Samman is given annually for outstanding contribution to

A) Literature B) Education
C) Fine arts D) Classical Music
 
Answer & Explanation Answer: A) Literature

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Honours and Awards

64 27968