Online Pneumatics Quiz by Jack Weeks | Apr 13, 2016 | Welcome to our Online Pneumatics Quiz. The quiz below should be administered to all maintenance personnel responsible for pneumatic equipment. A score of less than 70% is a strong indication that GPM's Basic Pneumatic Maintenance and Troubleshooting workshop could reap significant savings in unnecessary down time and parts cost. NameGeographic AreaEmailPhone Number1) Pascal’s Law states that pressure in a confined body of fluid acts _________in all directions. Exponentially Equally Erratically Excessively2) If a cylinder has 30 square inches of area on its full piston side, how much force can be developed to extend the cylinder if pressurized to 100 PSI? A. 30 lbs. B. 300 lbs. C. 3000 lbs. D. 3100 lbs.3) If the temperature of a gas increases and the pressure remains constant, what happens to the volume of the gas? It increases proportionally to the temperature. It decreases proportionally to the temperature. It stays the same.4) The temperature at which water vapor condenses out of the air and turns into liquid water is known as the__________________. Barometric pressure Dew point Adsorption rate Atmospheric pressure5) How many cubic feet of outside air is required to produce 1 cubic foot of air compressed to 100 PSI? 1 8 16 326) The absolute pressure of a confined body of gas varies _________ as its volume changes, provided the temperature remains constant. Directly Inversely Infinitely Conversely7) When piping a distribution air system, how much should the pipe be sloped downward to allow condensate to flow to a low point to be removed by a drain valve? 1” for every foot 1” for every 10 feet 1” for every 25 feet 1” for every 100 feet8) Which of the following will a filter NOT remove from the air line? Water Metal particles Water Vapor Desiccant particles9) The distance between a secondary filter and the component it protects should be no more than: 20 feet 50 feet 100 feet 150 feet10) True or False. An air regulator can be mounted in any position. True False11) The symbol shown below represents what type of pneumatic component? Air Lubricator Air Filter Relieving Type Air Regulator Non Relieving Type Air Regulator12) A good rule of thumb to use for operating an actuator at normal speed is to set the air regulator _________ higher than the pressure required to move the load. 10% 25% 50% 100%13) What kind of pneumatic component does the symbol shown below represent? Air filter with manual drain Internally piloted air regulator Air lubricator Quick exhaust valve14) True or False. It is better to over lubricate than under lubricate. True False15) How should an air lubricator be mounted? With the bowl to the left or to the right. With the bowl down. With the bowl up. In any position.16) Which of the following characteristics does the valve below NOT have? Air piloted Solenoid controlled Poppet type Two position Spring return17) When installing a flow control in circuit to control the speed of a cylinder, how is it best to connect it in the line? To meter the air in. To meter the air out. To bypass some of the air to atmosphere. Any of the above will work equally well.18) The amount of air flow that a compressor delivers is rated in: PSI GPM CFM HP19) What is the no. 1 reason for downtime on a reciprocating, piston type compressor? Valve failure Overheating Lubrication Contamination20) Which of the following does not apply to the function of the oil in a wet rotary screw compressor? To lubricate the screws. To lubricate the timing gears that drive the screws. To act as a sealant between the screws. To absorb the heat of compression.21) Which of the following is not true of a centrifugal type compressor? High drive speeds of 3,000 – 50,000 RPM are required. They are normally used in applications requiring less than 3000 CFM. The air is ported into a diffuser which causes an increase in pressure. More horsepower per CFM is required to drive than other types of compressors.22) True or False. For every 20° F rise in air temperature inside the compressor, the moisture content doubles. True False23) Where will you find the moisture separator in a compressor system? At the compressor outlet At the aftercooler outlet At the receiver outlet At the dryer outlet24) Which of the following is not a function of an air receiver? Stores pressurized air Absorbs pulsations from the compressor Removes additional moisture Lubricates the air prior to directing it to the system25) Which one of the following statements about air leaks is false? The leak is determined by the size of the orifice and the pressure at the point of the leak. Air leaks cause a drop in system pressure. Air leaks cause the compressor to cycle more often. Air leaks do not waste electrical energy and cost.26) Which two chemicals are normally used in deliquescent type dryers? Sodium Chloride and Calcium Chloride Hydrogen Peroxide and Sodium Chloride Hydrogen Chloride and Ammonia Oxide Sodium Nitrate and Sodium Sulfate27) Which of the following is not true of regenerative desiccant dryers? The chemical must be continually replaced Removes the water from the air by adsorbing it with an inert desiccant. Should be used when low dew points are required due to their high operating cost. Once saturated, the regeneration process can take several hours.28) Refrigeration dryers remove water vapor by __________________. Evaporation Condensation Intensification Compression29) True or False. Pneumatic servo and proportional valves are used to precisely control the speed, position or pressure in the system. True False30) True or false. An air motor can be stalled without damage. 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