Exams


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
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Q:

Which of the following PSU had received 'Top Challengers' and 'Best Mining Equipment Seller Award', recently?

A) BEML B) IOCL
C) BEL D) BSNL
 
Answer & Explanation Answer: A) BEML

Explanation:

BEML - Bharat Earth Movers Limited is the PSU which had received 'Top Challengers' and 'Best Mining Equipment Seller Award' recently for the year 2017 - 2018. 

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Filed Under: General Awareness
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Q:

Which city has been named as the World Capital of Architecture for 2020?

A) Rio de Janeiro B) Melbourne
C) Tokyo D) Paris
 
Answer & Explanation Answer: A) Rio de Janeiro

Explanation:

Rio de Janeiro has been named as the World Capital of Architecture for 2020.

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Q:

One who copies from other writers

A) Aggressive B) Militant
C) Bellicose D) Plagiarist
 
Answer & Explanation Answer: D) Plagiarist

Explanation:

One who copies from other writers is called Plagiarist.

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Filed Under: English
Exam Prep: Bank Exams

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Q:

A car travels 17 km South, then turns East and travels 11 km, then turns North and travels 9 km, then turns to its left and travels 11 km. Where is the car now with reference to its starting position?

A) 8 km North B) 8 km South
C) 26 km South D) 26 km North
 
Answer & Explanation Answer: B) 8 km South

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

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Q:

XYZ is right angled at Y. If m ∠Z = 60. What is the length (in cm) of YZ, if ZX = 9√3 cm?

A) 3√3 B) 3√3/2
C) 9√3/2 D) √3
 
Answer & Explanation Answer: C) 9√3/2

Explanation:
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Filed Under: Simplification
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Q:

If tanA - cotA = x, then value of x is?

A) (1 + 2cos2A)/(sinA cosA) B) (sinA cosA)/(1 - 2cos2A)
C) (sinA cosA)/(1 + 2cos2A) D) (1 - 2cos2A)/(sinA cosA)
 
Answer & Explanation Answer: D) (1 - 2cos2A)/(sinA cosA)

Explanation:
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Q:

Ammonia can be dried by

A) Sulphuric acid B) Calcium oxide
C) Phosphorus pentoxide D) Calcium Chloride
 
Answer & Explanation Answer: D) Calcium Chloride

Explanation:

Ammonia can be dried by Calcium Chloride or calcium hydroxide.

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Filed Under: Chemistry
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