Compressor lubrication may be divided into two main sections _______ lubrication and ________ lubrication
1. Peripheral
2. Internal
3. Splash
4. External
5. Pressure
Responda
1,2
3,5
2,3,4
2,4
Questão 2
Questão
A double acting reciprocating compressor:
Responda
Receives and compresses air at the head end of the cylinder
Receives and discharges air at both ends of the cylinder
Increases the pressure twice from the inlet valve
Has one compression stroke for every crankshaft revolution
Must have at least two pistons
Questão 3
Questão
Two pre-filters are installed on a package industrial screw compressor. They are installed at the inlet of the:
Responda
Water/oil seperator
Air dryer
After filter
Air fluid seperator
Moisture seperator
Questão 4
Questão
Reciprocating Compressor valves are usually automatic and open and close by:
Responda
Action of a poppet valve
Movement of the piston covering or uncovering ports
Operation of an air solenoid valve
A pressure difference
A camshaft
Questão 5
Questão
The axial flow compressor's basic operating principle is similar to a:
Responda
Centrifugal compressor
Reciprocating compressor
Reaction turbine in reverse
Reaction turbine
Rotary compressor
Questão 6
Questão
The compression Ratio is the ratio of:
Responda
Absolute discharge pressure to absolute inlet pressure
Gauge discharge pressure to gauge inlet pressure
The free air intake to the absolute volumetric discharge
The gauge inlet pressure to the absolute discharge pressure
Piston diameter to piston stroke
Questão 7
Questão
In a packaged screw compressor package, the bulk of the moisture is removed in the moisture separator in order to decrease the load in the:
Responda
Air/fluid seperator
Pre-filter
Air dryer
After filter
Water/Oil seperator
Questão 8
Questão
The prime purpose of water-cooling or air cooling an air compressors cylinder is to:
Responda
Cool the air
Reduce moisture and volume of the air
Keep the cylinder at a reasonable temperature
Prevent fire from occurring in the receiver
Prevent operator injury
Questão 9
Questão
An important advantage of a sliding vane compressor is that it:
Responda
Does not require internal lubrication
Has a high starting torque
Does not require inlet or discharge valves
Requires light nylon timing gears
Does not require a prime mover
Questão 10
Questão
An air filter on an air compressor inlet pipe is used to:
Responda
Reduce the air velocity
Keep out the moisture
Purify the air by removing exhaust process gases
Prevent dust and other particulate from entering the compressor
Increase the air velocity
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