Usaf 2F071 CDC Quiz
Quiz over all 3 volume's UREs
- 1.What is a major difference between a gas and a liquid?
- A.
A liquid is far less compressible than a gas.
- B.
A gas is far less compressible than a liquid.
- C.
A liquid is more combustible than a gas.
- D.
A gas is more combustible than a liquid.
- 2.What is the lifting force of a liquid called?
- A.
Laminar.
- B.
Interface.
- C.
Buoyance.
- D.
Dynamic pressure.
- 3.Which best describes immiscible liquids?
- A.
They mix well together.
- B.
One liquid will float on the other.
- C.
They will become an intrained solution.
- D.
They will repel each other and react violently.
- 4.Which unit of measurement would indicate velocity of flow?
- A.
Feet per second
- B.
Gallons per minute.
- C.
Cubic feet per second.
- D.
Cubic gallons per minute.
- 5.Which physical factor affects the behavior of liquids in both rest and motion?
- A.
Friction, applied forces, and gravity.
- B.
Friction, inertia, and atmospheric pressure.
- C.
Gravity, atmospheric pressure, and inertia.
- D.
Gravity, atmospheric pressure, and applied forces.
- 6.What determines the intensity of the excess pressure in a water-hammer wave?
- A.
The size of the pipe.
- B.
The specific gravity of the fuel.
- C.
The change in gallons per minute.
- D.
The amount of extinguished velocity.
- 7.Which type of measurement may be used to express pressure?
- A.
Kilograms.
- B.
Pounds.
- C.
Tons.
- D.
Pounds per square inch.
- 8.The standard measure for atmospheric pressure is equal to how many pounds per square inch?
- A.
13.1 psi.
- B.
14.7 psi.
- C.
15.2 psi.
- D.
17.9 psi.
- 9.What type of pressure reading is also referred to as overpressure?
- A.
Zero pressure.
- B.
Gauge pressure.
- C.
Absolute pressure.
- D.
Atmospheric pressure.
- 10.What term is used to describe the total pressure acting as a gas?
- A.
Overpressure.
- B.
Gauge pressure.
- C.
Absolute pressure.
- D.
Atmospheric pressure.
- 11.Which temperature scale is commonly used for scientific measurements?
- A.
Kelvin scale.
- B.
Rankine scale.
- C.
Réaumur scale.
- D.
Fahrenheit scale.
- 12.Which gas law declares that cooling a gas decreases its volume?
- A.
Boyle’s law.
- B.
Charles’ law.
- C.
Dalton’s law.
- D.
Gay-Lussac’s law.
- 13.Two or more atoms combined is called a
- A.
A compound.
- B.
An element.
- C.
A molecule.
- D.
A mixture.
- 14.According to the electron theory, atoms are composed of
- A.
Protons, neutrons, and electrons.
- B.
Neutrons, elements, and protons.
- C.
Electrons, molecules, and elements.
- D.
Electrons, neutrons, and matter.
- 15.How do the charges of protons and electrons differ?
- A.
Protons have positive charges, and electrons have neutral charges.
- B.
Protons have neutral charges, and electrons have positive charges.
- C.
Protons have negative charges, and electrons have positive charges.
- D.
Protons have positive charges, and electrons have negative charges.
- 16.The uniform movement of electrons in a specific direction is called
- A.
Electrical potential.
- B.
Free electrons.
- C.
Electric current.
- D.
Ionization.
- 17.Which shell of the valence electrons determines whether a material is a good or a poor conductor of electricity?
- A.
The outermost shell.
- B.
The middle shell.
- C.
The second shell.
- D.
The first shell.
- 18.Which statement best describes a positive ion?
- A.
An atom that lost a proton and has more electrons.
- B.
An atom that lost an electron and has more protons.
- C.
An atom that has an equal number of electrons and protons.
- D.
An atom that cannot throw off any protons.
- 19.What effect of current causes an electric motor to produce mechanical energy?
- A.
Heat.
- B.
Magnetism.
- C.
Chemical.
- D.
Reactance.
- 20.What is the unit of measurement for electrical power?
- A.
Watts.
- B.
Volts.
- C.
Amps.
- D.
Ohms.
- 21.A 3-horsepower motor consumes how much power?
- A.
755 W.
- B.
1,534 W.
- C.
2,023 W.
- D.
2,238 W.
- 22.A magnet that is magnetized by induction from an external source is called
- A.
A natural magnet.
- B.
An electromagnet.
- C.
An artificial magnet.
- D.
An electromechanical magnet.
- 23.When do the magnetic lines of force in a magnet cross?
- A.
When the north pole of a magnet is placed near the north pole of another magnet.
- B.
When the south pole of a magnet is placed near the north pole of another magnet.
- C.
When a permanent magnet and a temporary magnet are put together.
- D.
Magnetic lines of force never cross each other.
- 24.What are the two most common methods of producing voltage?
- A.
Magnetic and heat.
- B.
Chemical and heat.
- C.
Chemical and mechanical.
- D.
Magnetic and mechanical.
- 25.What type of current flow is the result of voltages produced by batteries and thermocouples?
- A.
Open current.
- B.
Direct current.
- C.
Latent current.
- D.
Alternating current.
Questions: 176 | Attempts: 7320 | Last updated: May 31, 2019
-
Sample Question(001) Which squadrons form a maintenance group?
Questions: 266 | Attempts: 7298 | Last updated: Oct 13, 2020
-
Sample QuestionWhen turning a patient, what is the MOST IMPORTANT precaution to take whether you are pushing or pulling the patient?
Questions: 48 | Attempts: 6011 | Last updated: Jul 12, 2019
-
Sample QuestionHow many individual options do sats have built-in within the reports list?
Back to top