Q:

A copper wire of radius r and length lhas a resistance of R. A second copper wire with radius 2r and length lis taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be

A) 5 R	B) 5 R/4
C) 4 R/5	D) R/5

Answer & Explanation Answer: D) R/5

Explanation:

1st copper wire: R = pl/A = pl/ πr2

2ndcopper wire: R’ = p’l’/A’ = pl/(4 πr2) = R/4

If joined in parallel, (1/Req) = (1/R) + (1/R’)

= 1/R + 4/R1/Req= 5/R

Req= R/5

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Oxygen in our blood is transported by a protein named

A) keratin	B) myoglobi
C) collagen	D) haemoglobin

Answer & Explanation Answer: D) haemoglobin

Explanation:

Oxygen in our blood is transported by a protein named Haemoglobin.

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

Integration is primarily concerned with

A) ensuring that the time, scope and cost baselines are consistent with an acceptable quality standard and with the customer’s expectations.	B) getting people working together effectively toward common project goals through appropriate training, management and leadership.
C) effectively integrating the processes among the project management process groups that are required to accomplish project objectives with an organization’s defined procedures.	D) ensuring that all the tools and techniques of the various planning processes are appropriately scaled to the complexity and risk exposure of the project.

Answer & Explanation Answer: C) effectively integrating the processes among the project management process groups that are required to accomplish project objectives with an organization’s defined procedures.

Explanation:

Answers A, B and D all result from effectively integrating the work of the project management process groups. PMBOK [4.0]

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Filed Under: PMP Certification

0 3154

Q:

In which layer is the temperature the lowest?

A) Troposphere	B) Ionosphere
C) Mesosphere	D) Stratosphere

Answer & Explanation Answer: C) Mesosphere

Explanation:

The mesosphere lies above the stratosphere and extends to an altitude of about 85 km. This is layer is often referred to as the cold layer, as the lowest readings in the atmosphere are found here.

Temperature decreases with height, reaching a minimum average value of -90 ºC at the top of the layer.

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Filed Under: General Awareness
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5 3153

Q:

The technique of DNA fingerprinting in human was developed for first time by _________

A) Lalji Singh	B) Alec Jeffreys
C) R. Ericson	D) J. Black

Answer & Explanation Answer: B) Alec Jeffreys

Explanation:

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Filed Under: Biology

6 3152

Q:

What is seismic zone extending at an angle of about $45^{o}$ from the base of an ocean trench, down through lithosphere to the asthenosphere known as?

A) Appleton layer	B) Benioff zone
C) Conard discontinuity	D) Convergence zone

Answer & Explanation Answer: B) Benioff zone

Explanation:

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Filed Under: World Geography

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Q:

What are the Monomers that make up Proteins?

A) Amino acids	B) Nucleotides
C) Disaccharides	D) Chaperones

Answer & Explanation Answer: A) Amino acids

Explanation:

Proteins are long chains of Amino acids. That is in brief, Amino acids are the monomers of Proteins. Amino acids are compounds which contain both an amino group and a carboxylic group. Proteins are made up of 20 essential amino acids.

Monomer means a small molecule of an organic substance i.e, building block in general.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

Who is known as father of Biology

A) Aristotle	B) Darwin
C) Lamark	D) Linneus

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