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Q:

three_resistors_are_arranged_in_a_circuit_as_shown_above1559105724.PNG image

Three resistors are arranged in a circuit as shown above. The battery has an unknown but constant emf ε and a negligible internal resistance.

Now, determine the equivalent resistance of the three resistors.

A) 12 Ω B) 10 Ω
C) 16 Ω D) 15 Ω
 
Answer & Explanation Answer: A) 12 Ω

Explanation:

From the given circuit,

three_resistors_are_arranged_in_a_circuit_as_shown_above1559105964.PNG image

The resistors R1 and R2 are in parallel connection and R3 is in series with R1 & R2

The equivalent resistance of R1 and R2 is

Req = (12 × 4)/(12 + 4) = 3 Ω.

Adding R3 in series with the pair gives

R = Req + 9

R = 3 + 9

R = 12 Ω.

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Q:

Who has been appointed as the new Chairman of HSBC ?

A) Douglas Flint B) Stuart Gulliver
C) Mark Tucker D) Victor Bernard
 
Answer & Explanation Answer: C) Mark Tucker

Explanation:

British businessman Mark Tucker, currently group chief executive and president of insurance group AIA, will take over from Douglas Flint as the new Chairman of HSBC in October.

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Filed Under: General Awareness
Exam Prep: Bank Exams , CAT
Job Role: Bank PO

2 2711
Q:

Operating system is an example of

A) Application software B) System software
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) System software

Explanation:

A computer software are of two types. They are :

1. System software

2. Application software

 

Systems software includes the operating system and all the utilities that enable the computer to function. 

 

Application software includes programs that do real work for users.

 

Hence, Operating system is an example of system software.

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Filed Under: Computer
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Q:

Which substance contains metallic bonds?

A) C6H12O6 B) Hg
C) H2O D) NaCl
 
Answer & Explanation Answer: B) Hg

Explanation:

Metallic bond is a bond between two metal atoms. Here in the given option Hg is the only metal with metallic bond.

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Filed Under: Chemistry
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Q:

The goal of a market economy is to

A) equity B) security
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) equity

Explanation:
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Filed Under: Indian Economy
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1 2710
Q:

Work done in a free expansion process is

A) Minimun B) 0
C) Maximum D) None of the above
 
Answer & Explanation Answer: B) 0

Explanation:

No work done as there is no external external pressure in free expansion. 

 

Hence, Work done in a free expansion process is Zero.

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Filed Under: Physics
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Q:

Hong Kong will be transferred to china in

A) 1990 B) 1996
C) 1997 D) 2000
 
Answer & Explanation Answer: C) 1997

Explanation:
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Filed Under: Important Days and Years

2 2709
Q:

Which measurement depends on gravitational force?

A) Mass B) Weight
C) Height D) All of the above
 
Answer & Explanation Answer: B) Weight

Explanation:

We know that,

Weight W = mg. That is mass times gravitational force.

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Filed Under: Physics
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