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PTAC_1320

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
Force per unit area is called? 
a.
Velocity
c.
Volume
b.
Mass
d.
Pressure
 

 2. 
Mass per unit volume is called?
a.
Pressure
c.
Viscosity
b.
Density
d.
Velocity
 

 3. 
A fluid’s resistance to flow is called?
a.
Pressure
c.
Viscosity
b.
Density
d.
Velocity
 

 4. 
The 2 main temperature scales are?     
a.
Dalton & Fahrenheit
c.
Dalton & Celsius
b.
Nobel & Celsius
d.
Celsius & Fahrenheit
 

 5. 
The ratio of the density of a liquid to the density of water is called?
a.
Toxicity
c.
Specific gravity
b.
Flammability
d.
Normality
 

 6. 
Stored energy is called?           
a.
Potential energy
c.
Electrical energy
b.
Radiant energy
d.
Kinetic energy
 

 7. 
This term is used to describe how easily a substance will burn.                                   
a.
Density
c.
Toxicity
b.
Flammability
d.
Viscosity
 

 8. 
This term is used to describe a substance’s harmful effect on the body
a.
Density
c.
Toxicity
b.
Flammability
d.
Viscosity
 

 9. 
This device is used to develop pressure      so liquids can be transported.
a.
Valve
c.
Motor
b.
Engine
d.
Pump
 

 10. 
Pressure above atmospheric pressure is called?
a.
Vacuum
c.
Fluid pressure
b.
Gauge pressure
d.
Hydro pressure
 

 11. 
The 3 states of matter are:                      
a.
Solid, crystal, fluid
c.
Liquid, crystal, gas
b.
Solid, liquid, gas
d.
Gas, vapor, liquid
 

 12. 
If the pressure is increased, the boiling point of a fluid will?                     
a.
Increase
c.
Not change
b.
Decrease
 

 13. 
If the volume of a gas is reduced, the pressure will?
a.
Increase
c.
Not change
b.
Decrease
 

 14. 
If the temperature of a gas is reduced, the pressure will?
a.
Increase
c.
Not change
b.
Decrease
 

 15. 
If the temperature of a fluid is increased, the density will?
a.
Increase
c.
Not change
b.
Decrease
 

 16. 
Atmospheric pressure at sea level is?
a.
9.5 psi
c.
14.7 psi
b.
11.5 psi
d.
50.0 psi
 

 17. 
The boiling point of water at atmospheric pressure is?
a.
32 F
c.
175 F
b.
100 F
d.
212 F
 

 18. 
The molecular structure of water is?
a.
H3O
c.
H2O2
b.
HO
d.
H2O
 

 19. 
The lightest element has only one electron. It is?
a.
Oxygen
c.
Helium
b.
Hydrogen
d.
Water
 

 20. 
Air is primarily composed of these two elements.
a.
Oxygen and water
c.
Oxygen and helium
b.
Oxygen and hydrogen
d.
Oxygen and nitrogen
 

 21. 
A valve that allows flow in only one direction is called?
a.
Gate valve
c.
Globe valve
b.
Flow valve
d.
Check valve
 

 22. 
Which of these materials is the most volatile?
a.
Asphalt
c.
Lubricating oil
b.
Gasoline
d.
Peanut butter
 

 23. 
The area of a circle= ?
a.
pi X diameter
c.
pi x diameter squared
b.
pi x radius
d.
pi x radius squared
 

 24. 
If the maximum fill level of a tank is 20 feet and the current level is 8 feet and the tank level is increasing at the rate of 2 feet/hour, how many hours will it take to reach max fill level?
a.
3 hours
c.
6 hours
b.
5 hours
d.
8 hours
 

 25. 
The federal agency that insures employee safety.
a.
EPA
c.
DOT
b.
OSHA
d.
UAW
 

 26. 
What 3 conditions are required for a fire to occur?
a.
Fuel, oxygen, heat
c.
Oxygen, air, heat
b.
Fuel, pressure, light
d.
Fuel, heat, light
 

 27. 
If the flow rate in a pipeline is doubled, the pressure drop will?
a.
Increase by factor of 2
c.
Not change
b.
Increase by factor of 4
d.
Decrease by factor of 2
 

 28. 
This device is used to connect sections of threaded pipe.
a.
Flange
c.
Gasket
b.
Wrench
d.
Union
 

 29. 
This device is inserted between flanges to prevent leaks.
a.
Union
c.
Gasket
b.
Coupling
d.
Wrench
 

 30. 
This device is used to measure  temperature.
a.
Bernoulli
c.
Barometer
b.
Thermometer
d.
Gauge
 

 31. 
How many square inches in one square foot?
a.
12
c.
144
b.
100
d.
18
 

 32. 
The pressure at a depth of 100 feet under water is the same as the pressure on the surface of the water.
a.
True
b.
False
 

 33. 
What are the 3 ways heat transfer occurs?
a.
Conduction, convection, kinetic
c.
Radiation, kinetic, rotational
b.
Conduction, convection, radiation
d.
Space, lateral, vertical
 

 34. 
The rate of heat transfer will increase if the temperature difference between the two objects _____________.
a.
Increases
b.
Decreases
 

 35. 
A valve is normally closed by rotating the hand wheel  in which direction?
a.
Clockwise
b.
Counterclockwise
 

 36. 
Which of these materials would be compressible?
a.
Lube oil
c.
Steel
b.
Air
d.
Concrete
 

 37. 
What type of electricity is used in your home?
a.
DC
c.
UV
b.
RC
d.
AC
 

 38. 
The flow rate of electricity is measured in these units?
a.
Amps
c.
PSI
b.
Volts
d.
Degrees
 

 39. 
The pH of an acid is?
a.
7.0
c.
< 7.0
b.
> 7.0
 

 40. 
Which of these is an example of  PPE (personal protective equipment)?
a.
Laser
c.
Robot
b.
Safety glasses
d.
Vessel
 

 41. 
Kinetic energy is
a.
The energy of motion
c.
Potential energy
b.
The energy of mass
d.
The energy of vibration
 

 42. 
Any pressure below atmospheric pressure is called
a.
Vapor Pressure
c.
Vacuum
b.
Lower pressure
d.
Potential pressure
 

 43. 
The atomic weight of a material is equal to.
a.
Sum of electrons + protons
c.
Number of electrons
b.
Number of neutrons
d.
Sum of protons + neutrons
 

 44. 
This speeds up the rate of a chemical reaction.
a.
Catalyst
c.
Breaker
b.
Solvent
d.
Resin
 

 45. 
This federal agency protects the environment.
a.
OSHA
c.
EPA
b.
DOT
d.
ISO
 

 46. 
This device is normally driven by steam and rotates a generator to produce electricity.
a.
Transformer
c.
Pulsator
b.
Turbine
d.
Engine
 

 47. 
A cooling tower reduces the water temperature by.
a.
Chemical reaction
c.
Evaporating the water
b.
Chilling the water
d.
Condensing the water
 

 48. 
The gas leaving a furnace stack is called ?
a.
Vent gas
c.
Waste gas
b.
Flue gas
d.
Fuel gas
 

 49. 
This compound is formed by combustion and is called the greenhouse gas.
a.
Methane
c.
Nitrogen
b.
Hydrogen
d.
Carbon dioxide
 

 50. 
50 degrees C is equal to ____    degrees F
a.
75
c.
122
b.
90
d.
48
 



 
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