Questions

Q:

Which compressor is usually used in AC?

A) Centrifugal B) Rotary
C) Reciprocating D) Axial
 
Answer & Explanation Answer: C) Reciprocating

Explanation:

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. The capacity of the air conditioning depends entirely on the capacity of the compressor. The reciprocating compressor is usually used in AC.

Which_compressor_is_usually_used_in_AC1559283550.jpg image

The reciprocating compressor have piston and cylinder arrangement like the automotive engine. The reciprocating motion of the piston due to external power compresses the refrigerant inside the cylinder.

There are three types of reciprocating compressors:

hermetically sealed,

semi-hermetically sealed and

open type.

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

What is autonomous system?

Answer

It is a collection of routers under the control of a single administrative authority and that uses a common Interior Gateway Protocol

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Subject: Networking
Job Role: Network Engineer

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Q:

Where is the headquaters of the UNESCO

A) New Delhi B) London
C) Paris D) New York
 
Answer & Explanation Answer: C) Paris

Explanation:
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Filed Under: World Organisations

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Q:

Two equal arcs of two circles subtend angle of  60° and 75° at the centre. The ratio of the radii of the two circles is

A) 5/4 B) 3/2
C) 4/5 D) 2/3
 
Answer & Explanation Answer: A) 5/4

Explanation:
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Q:

Which country is associated with the 'Jesuit School'?

A) Spain B) France
C) Germany D) England
 
Answer & Explanation Answer: A) Spain

Explanation:

In Spain, where there were no protestants, a soldier named lgnatius Loyola started an organisation for clergymen to work wholly as 'soldiers of jensus' in the service of the Church. Its members came to be called jesuits. They went from place to place and won back followers in France and Germany. They established missions in india, china, Africa and the Americas to gain new adherents. The Jesuit Schools which they started to strengthen the Roman Catholic  Church are still in existence in many countries of the world.

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Filed Under: World History

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Q:

Explain Given the following SQL statement: GRANT REFERENCES ON TABLE tab1 TO USER usera.Which of the following describes what USERA is allowed to do?

A) Create a read?only view using TAB1. B) Alter TAB1 to add a check constraint.
C) Define a primary key or unique constraint on TAB1. D) Define a dependent table where TAB1 is the parent.
 
Answer & Explanation Answer: D) Define a dependent table where TAB1 is the parent.

Explanation:
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Filed Under: IBM Certification

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Q:

An important function of fat in the body is to

A) Protect vital organs B) Stores energy
C) Insulate us D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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Filed Under: Biology
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Q:

In which body cavities are the lungs located

A) Pelvic cavity B) Thoracic cavity
C) Abdominal cavity D) Body cavity
 
Answer & Explanation Answer: B) Thoracic cavity

Explanation:
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Filed Under: Biology
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