Indication of transformer primary and secondary voltage relationships is accompl

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Question
Indication of transformer primary and secondary voltage relationships is accomplished by:
Options
A. color-coded wires
B. dot notation
C. black, rather than gray, casings
D. winding ratios

Correct Answer

dot notation

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3. Electromagnetism is the:
Options
A. magnetic field caused by a permanent magnet
B. action between a permanent and an artificial magnet
C. magnetic field action with a current-carrying wire
D. current in the coil

5. A magnetic circuit breaker will open to protect equipment only when:
Options
A. voltage is exceeded
B. an open is in the equipment
C. the equipment is operating properly
D. current is exceeded

6. When a transformer secondary lead has been connected to a middle loop that is not an end connector, it is called a:
Options
A. multiple-tapped secondary
B. center-tapped secondary
C. multiple winding secondary
D. single winding secondary

7. Which coil would be used as a step-up transformer primary if coil number 1 has 100 more turns than coil number 2?
Options
A. The coil windings must be the same.
B. coil 1
C. The coil ratio is too small.
D. coil 2

8. Inductance is:
Options
A. directly proportional to the length of the coil
B. directly proportional to the number of turns on the coil
C. inversely proportional to the cross-sectional area of the coil
D. inversely proportional to the permeability

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