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ASSIGNMENT 2
Textbook assignment: Chapter 2, “Circuit Protection Devices,” pages 2-1 through 2-42.
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2-1. Circuit protection devices are used for
which of the following purposes?
1. To protect people
2. To protect circuits
3. To guard against hazardous
conditions
4. All of the above
2-2. Which of the following conditions does
NOT require the use of a circuit
protection device?
1. Direct short
2. High resistance
3. Excessive current
4. Abnormal heating
2-3. When a point in a circuit, where full
system voltage is present, comes in direct
contact with the ground or return side of
the circuit, which of the following terms
applies?
1. Direct short
2. High resistance
3. Excessive current
4. Abnormal heating
2-4. When circuit current increases beyond
the designed current carrying capability
of the circuit, which of the following
terms applies?
1. Direct short
2. High resistance
3. Excessive current
4. Abnormal heating
2-5. If the bearings of a generator were to fail,
which of the following circuit conditions
would probably occur?
1. Direct short
2. High resistance
3. Excessive current
4. Abnormal heating
2-6. How are circuit protection devices
connected to the circuit they are
protecting?
1. Alongside
2. In series
3. In parallel
4. In series-parallel
2-7. Which of the following two are circuit
protection devices?
1. Electrical plugs and CO2 cartridges
2. CO2 cartridges and circuit breakers
3. Fuses and circuit breakers
4. Fuses and electrical plugs
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INTENTIONALLY.
