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Q:

A   parallel-plate   capacitor,with   air   in between  the  plates,  has  capacitance  C. Now  the  space  between  the  two  plates  of the  capacitor  is  filled  with  a  dielectric  of dielectric constant 7. Then the value of the capacitance will become

A) C B) C/7
C) 7C D) 14C
 
Answer & Explanation Answer: C) 7C

Explanation:

As  the  capacitance  is  charged  by the  factor  equal  to  the  value  of dielectric constant, Hence, C’ = kC = 7C

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Which one of the following statements with regard to the Indian Railways is not correct?

A) The Indian rail networks have been developed throughout the Konkan coast. B) There is very low density of railway lines in the Himalayan region.
C) The north Indian plain has a dense network of railway. D) At present, India has the largest railway network in the world
 
Answer & Explanation Answer: D) At present, India has the largest railway network in the world

Explanation:

At   present   US   has   the   largest railway   network   in   the   world. Second is China and third is India.

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Filed Under: General Awareness
Exam Prep: Bank Exams

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Q:

What is the simplified value of 1-sin A1+sin A ?

A) tan A B) sec A
C) sec A + tan A D) sec A – tan A
 
Answer & Explanation Answer: D) sec A – tan A

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?

A) 68.5 B) 69
C) 69.5 D) 70
 
Answer & Explanation Answer: B) 69

Explanation:

Difference of marks = 72 + 61 –48 –65 = 20∴Correct average marks = 68 +20/20= 69

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

A man is facing towards the west. He turns 45 degrees clockwise and then another 180 degrees anticlockwise. Finally, he turns 90 degrees in the right. Which direction is he facing now?

A) West B) South-east
C) North-east D) South-west
 
Answer & Explanation Answer: D) South-west

Explanation:
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Filed Under: Direction Sense Test
Exam Prep: Bank Exams

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Q:

A dishonest shopkeeper professes to sell goods at his cost price but uses a false weight of 950 gms, for each kilogram. His gain percentage is

A) 100/23% B) 100/19%
C) 100/17% D) 100/21%
 
Answer & Explanation Answer: B) 100/19%

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is

A) 2 years B) 2.4 years
C) 3 years D) 1.5 years
 
Answer & Explanation Answer: A) 2 years

Explanation:
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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

Select the word with the correct spelling.

A) blamefull B) procsimal
C) hilocky D) miracles
 
Answer & Explanation Answer: D) miracles

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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