All of the following statements are true EXCEPT:
A. Refrigerant R-1234yf is flammable.
B. Refrigerant R-13a is flammable.
C. Contact with refrigerant vapor can cause frostbite.
D. Coolant cannot be drained into the shop drain system.
Answer: B
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If hidden features are relatively few and simple in geometry, such as a few simple holes or slots that go all the way through the part, the use of ____ is probably best.
A. half sections B. hidden lines C. quarter sections D. rotational sections
Answer the following statement(s) true (T) or false (F)
1. The anode is the terminal or electrode where electrons enter the cell, and the cathode is the electrode that carries electrons away from the cell. 2. Corrosion is the rusting or wearing away of a metal by the formation of a chemical compound of the metal. 3. A spark is a quiet, regular discharge, and successive sparks follow separate paths. 4. In gas at atmospheric pressure, a free electron collides with gas atoms so infrequently that it only travels long enough to gain the speed required to ionize an atom by collision. 5. Edison’s concept of electron conduction in vacuum tubes has been applied to hundreds of devices designed to achieve specific tasks.
If regular-grade gasoline is used in an engine designed for premium gasoline, what might result?
A) Reduced engine power B) Reduced fuel economy C) Both A and B D) Neither A nor B
Maximum torque is developed when the magnetic fields of the stator and rotor are ____ with each other.
A. in phase B. 90o out of phase C. 45o out of phase D. 180o out of phase