Ac & DC Motor Video Questions
Questions about material in AC and DC motors video
- 1.
- 'Basically, an electric motor is a device that converts
- A.
A. Mechanical energy into electrical energy
- B.
B. Heat energy into electrical energy
- C.
C. Electrical energy into mechanical energy
- D.
D. Mechanical energy into potential energy
- 2.
- A magnetic field consists of a series of lines called what?
- A.
A. Magnetic lines of flux
- B.
B. Current lines
- C.
C. Polarity lines
- D.
D. Field nets
- 3."The movement of an object as a result of the interaction of two separate magnetic fields is called what?"
- A.
A. Current flow
- B.
B. Motor action
- C.
C. Induction
- D.
D. Voltage
- 4."What effect do two like magnetic poles have on each other?"
- A.
A. They attract each other
- B.
B. They dissipate each other's magnetic field.
- C.
C. They increase each other's magnetic field
- D.
D. They repel each other
- 5."When is the attraction between two unlike magnetic poles the strongest?"
- A.
A. When they're closest to each other
- B.
B. When they're farthest away from each other
- C.
C. When they're 90 degrees from each other
- D.
D. When they've just passed each other
- 6."A magnetic field consists of a series of lines known as magnetic lines of
- A.
A. Voltage
- B.
B. Amperage
- C.
C. Flux
- D.
D. Thrust
- 7.Current that continually reverses direction is known as
- A.
A. AC
- B.
B. DC
- C.
C. EC
- D.
D. RC
- 8."When current flows through a wire that's shaped in the form of a coil, what happens to the individual flux lines that are produced?"
- A.
A. They are grounded.
- B.
B. They oppose each other
- C.
C. Together, they create one large magnetic field
- D.
D. They cancel each other
- 9."A bar magnet rotates when alternating current flows through the coils. In terms of AC motor operation, the bar magnet can be referred to as what?"
- A.
A. Stator
- B.
B. Commutator
- C.
C. Rotor
- D.
D. Impeller
- 10."A bar magnet rotates when alternating current flows through the coils. In terms of AC motor operation, the coils can be referred to as what?"
- A.
A. Motor controller
- B.
B. Commutator
- C.
C. Rotor
- D.
D. Stator