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Q:

Slip rings are usually made of

A) Aluminium B) Copper
C) Phosphor Bronze D) Carbon
 
Answer & Explanation Answer: C) Phosphor Bronze

Explanation:

A Slip ring is a ring in a dynamo or electric motor which is attached to and rotates with the shaft, passing an electric current to a circuit via a fixed brush pressing against it.

 

Slip rings are usually made of Phosphor Bronze.

 

Slip ring motors usually have a 'phase-wound' rotor. This type of rotor has a 3-phase, double-layer, distributed winding consisting of coils used in alternators. The rotor core is made up of steel laminations which have slots to accommodate formed 3-single phase windings.

slip_rings_are_usually_made_of1535005379.png image

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Filed Under: Physics
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Q:

What is a Safe State and what is its use in deadlock avoidance?

Answer

When a process requests an available resource, system must decide if immediate allocation leaves the system in a safe state. System is in safe state if there exists a safe sequence of all processes. Deadlock Avoidance : ensure that a system will never enter an unsafe state.

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Subject: Operating Systems

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Q:

The software development life cycle begins with a proof of concept and progress into the build, test, and acceptance phases as the project develops. Some times, differences between stakeholders can develop into conflict, which impacts the customer. As a trained, professional project manager, how do you handle this situation and resolve the customer's concerns?

A) Let the customer vent and take notes B) Schedule a meeting
C) Develope a change request for the customer D) Resolve the matter in favour of the customer
 
Answer & Explanation Answer: D) Resolve the matter in favour of the customer

Explanation:
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Filed Under: PMP Certification

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Q:

_________ is known as the Queen of the Arabian Sea?

A) Cochin B) Mumbai
C) Mangalore D) Surat
 
Answer & Explanation Answer: A) Cochin

Explanation:
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Filed Under: Indian Geography

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Q:

The famous hill-station Kodaikanal lies in

A) Palani hills B) Javadi hills
C) Nilgiri hills D) Cardamom hills
 
Answer & Explanation Answer: A) Palani hills

Explanation:

The famous hill-station Kodaikanal lies in Palani hills.

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Filed Under: Indian Geography
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Q:

In isotopes the number of neutrons are

A) same B) different
C) both D) none
 
Answer & Explanation Answer: B) different

Explanation:
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Filed Under: Chemistry

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Q:

What are the rungs of the DNA ladder made of?

A) phosphates and sugars B) nitrates and sugars
C) nitrates and phosphates D) sugars and hydrates
 
Answer & Explanation Answer: C) nitrates and phosphates

Explanation:

The rungs or the sides of the DNA ladder is made of Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA i.e, A sugar (deoxyribose) and a phosphate.

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Filed Under: Biology
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Q:

What kind of pet always stays on the floor?

A) Cat B) Dog
C) Carpet D) All of the above
 
Answer & Explanation Answer: C) Carpet

Explanation:

A Carpet is the pet which always stays on the floor.

Carpet_on_floor1531810151.jpg image

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