Power Engineering: A2 Chapter 8 3rd
Class Exam and All Correct Answers
2026 Updated.
c - Answer The most common type of industrial electrical generation is:
a. Single phase.
b. Two phase.
c. Three phase.
d. DC generators.
e. AC motors.
a - Answer With all dark synchronization of an electrical generator and the synchronizing
lamps are dark, you:
a. Could have higher voltage than the line system.
b. Have lower voltage rating.
c. Have two or more lamps connected in parallel.
d. Could have higher current than the line system.
e. Should have colored glass.
b - Answer Salient pole rotors:
a. Are used on high speed alternators
b. Are used on alternators not exceeding 1800 rpm
c. Require no maintenance
d. Are used on only single phase generators
e. Are used on only three phase generators.
c - Answer For paralleling alternators, the incoming alternator must be the same _____ as the
system voltage.
a. Manufacturer.
b. Conductance.
c. Voltage.
d. Amperage.
, e. Current.
a - Answer Single-phase transformers:
a. Use two common forms of construction known as the core type and the shell type.
b. High voltage coil is nearest the iron core.
c. Are used in all power supplies.
d. Use two common forms of construction known as the internal type and the external type.
e. Are very low in efficiency.
e - Answer Paralleling alternators require the following conditions:
1. It must be in phase with the system.
2. The incoming alternator must be the same voltage as the system.
3. Its phase sequence must be the same as the system.
4. Alternator frequency and system frequency must be the same.
a. 1, 3, 4
b. 1, 2, 3
c. 2, 3, 4
d. 1, 2, 4
e. 1, 2, 3, 4.
a - Answer Transformers are used for:
1. Stepping up AC voltage.
2. Stepping down AC voltage.
3. Transforming AC voltage to DC voltage.
4. Rectifying DC voltage to AC voltage.
a. 1, 2
b. 1, 2, 3
c. 1, 2, 4
d. 1, 3, 4
e. 1, 2, 3, 4.
c - Answer The most common frequency of AC generators in North America is:
Class Exam and All Correct Answers
2026 Updated.
c - Answer The most common type of industrial electrical generation is:
a. Single phase.
b. Two phase.
c. Three phase.
d. DC generators.
e. AC motors.
a - Answer With all dark synchronization of an electrical generator and the synchronizing
lamps are dark, you:
a. Could have higher voltage than the line system.
b. Have lower voltage rating.
c. Have two or more lamps connected in parallel.
d. Could have higher current than the line system.
e. Should have colored glass.
b - Answer Salient pole rotors:
a. Are used on high speed alternators
b. Are used on alternators not exceeding 1800 rpm
c. Require no maintenance
d. Are used on only single phase generators
e. Are used on only three phase generators.
c - Answer For paralleling alternators, the incoming alternator must be the same _____ as the
system voltage.
a. Manufacturer.
b. Conductance.
c. Voltage.
d. Amperage.
, e. Current.
a - Answer Single-phase transformers:
a. Use two common forms of construction known as the core type and the shell type.
b. High voltage coil is nearest the iron core.
c. Are used in all power supplies.
d. Use two common forms of construction known as the internal type and the external type.
e. Are very low in efficiency.
e - Answer Paralleling alternators require the following conditions:
1. It must be in phase with the system.
2. The incoming alternator must be the same voltage as the system.
3. Its phase sequence must be the same as the system.
4. Alternator frequency and system frequency must be the same.
a. 1, 3, 4
b. 1, 2, 3
c. 2, 3, 4
d. 1, 2, 4
e. 1, 2, 3, 4.
a - Answer Transformers are used for:
1. Stepping up AC voltage.
2. Stepping down AC voltage.
3. Transforming AC voltage to DC voltage.
4. Rectifying DC voltage to AC voltage.
a. 1, 2
b. 1, 2, 3
c. 1, 2, 4
d. 1, 3, 4
e. 1, 2, 3, 4.
c - Answer The most common frequency of AC generators in North America is:
