Problem 1(40) Multiple Cholces (Pleaso write down the letter A, B, C or D for th

Question

Problem 1(40) Multiple Cholces (Pleaso write down the letter A, B, C or D for the answer 1 . Flux density B is defined as the ratio ?1A, where A is the area a. parallel b. perpendicular ?. 450 d. None of the above ANS: 2. A circuit breaker a. is installed for safety b. opens overloaded circuits c. is often used in place of a fuse d. All of the above ANS: 3. The invisible lines of force surrounding the poles of a magnet are called lines. a. flux b. residual C. reluctance d. current ANS: 4. Which of the following is a magnetic material? a. soft iron b. glass c. wood d. None of the above ANS: 5. Electron movement is called a. voltage b. current c. resistance d. ohm ANS

Explanation / Answer

1. Perpendicular (b)

2. Installed for safety, opens overloaded circuit, is often used in place of a fuse (d)

3. Flux (a)

4. Soft iron (a)

5. Current (b)

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