Types of Compression Systems

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What are the three systems mentioned in the text?

Air compression, natural gas compression, and refrigeration compression (correct)
Water, steam, and natural gas compression
Pneumatic control, water treatment, and fire protection
Electricity, air, and steam compression

Which of the following is NOT mentioned as a use of compressed air in the text?

Spray painting
Operating pneumatic control systems
Generating electricity (correct)
Operating fire protection equipment

Compressed air is essential for operating equipment in which type of buildings?

Industrial and commercial buildings only
Industrial, commercial, and residential buildings (correct)
Public buildings and hospitals
Residential buildings only

What is one advantage of using compressed air to drive tools and machinery?

Compressed air machines cannot be damaged by overloading (C) Signup and view all the answers

In which type of equipment is compressed air NOT used according to the text?

Solar power equipment (B) Signup and view all the answers

Where can compressor systems range in size according to the text?

From portable household compressors to industrial compressors in large rooms (D) Signup and view all the answers

What is a disadvantage of compressed air tools?

Air transmission piping is more expensive and difficult to install than electrical wiring. (B) Signup and view all the answers

Where should an air compressor be located?

In a well-lit area that is easily accessible. (B) Signup and view all the answers

What is the purpose of an air filter in the inlet line of an air compressor?

To prevent dust and other particles from being carried into the compressor. (B) Signup and view all the answers

What is a concern when compressing natural gas?

Preventing liquids from entering the compressor. (C) Signup and view all the answers

What is the purpose of suction scrubbers or separators in natural gas compression?

To remove liquids from the gas stream. (C) Signup and view all the answers

Why are intercoolers and aftercoolers used in natural gas compression?

To remove heat generated by compression. (A) Signup and view all the answers

What is the function of the coalescer in the gas pipeline system?

To minimize the moisture entrained in the gas (A) Signup and view all the answers

What is the main purpose of a reciprocating compressor?

To raise the pressure of the refrigerant vapor and draw it from the evaporator (C) Signup and view all the answers

In which type of compressor is a sealing arrangement required to prevent refrigerant from escaping along the shaft?

Hermetic Type (B) Signup and view all the answers

What is the distinguishing feature of a semi-hermetic screw compressor?

Cylinder heads, end plates, and bottom plate can be removed for servicing (A) Signup and view all the answers

Why is a safety head fitted in a reciprocating compressor for a refrigeration system?

To prevent damage caused by hydraulic pressure resulting from trapped liquid at the end of compression stroke (D) Signup and view all the answers

What does an open type compressor referred to as 'open' signify?

One end of the crankshaft extends outside the crankcase (D) Signup and view all the answers

In which type of compressor is servicing in the field not possible due to its sealed housing?

Hermetic Type Compressor (A) Signup and view all the answers

What is the most common type of compressors used in refrigeration systems?

Reciprocating (C) Signup and view all the answers