ACTUAL Exam Questions and CORRECT
Answers
1-1. Circle the correct answer to complete the sentence. A ______________________ steps
down transmission voltage to distribution voltage.
a) substation transformer
b) pole-top transformer
c) regulator
d) step-up transformer - CORRECT ANSWER - a) substation transformer
1-2. Circle the correct answer to complete the sentence. In a typical distribution system,
electricity at ______________________ voltage is supplied to a customer.
a) primary
b) nominal
c) peak
d) secondary - CORRECT ANSWER - d) secondary
1-3. Circle the correct answer to complete the following sentence. Primary distribution voltage
is:
a) applied to a distribution system by a substation transformer.
b) the voltage of the electricity supplied to the customer.
c) applied to distribution lines in a service area.
d) both (a) and (c).
e) both (b) and (c). - CORRECT ANSWER - d) both (a) and (c).
1-4. True or False. A transformer improves the overall efficiency of a distribution system by
increasing the amount of usable power that can be supplied to a customer. - CORRECT
ANSWER - False
, 1-5. Circle the correct answer to complete the sentence. During high voltage surges,
______________________ provide a way of redirecting excess current to the ground.
a) surge destroyers
b) surge arresters
c) surge eliminators
d) current protectors - CORRECT ANSWER - b) surge arresters
2-1. Circle the correct answers. Which of the following are the three elements that most
distribution transformers have in common?
a) Primary winding
b) Mounting bolts
c) Secondary winding
d) Fuses
e) Core - CORRECT ANSWER - A, C, E
2-2. True or False. Voltage applied to the primary winding of a distribution transformer is usually
higher in value than the voltage induced in the secondary winding. - CORRECT ANSWER -
True
2-3. Circle the correct answer to complete the following sentence. In a typical distribution
transformer:
a) primary voltage is applied to the secondary winding through connections at the transformer
core.
b) primary distribution voltage applied to the secondary winding induces a secondary voltage
which is supplied to the customer.
c) primary voltage applied to the primary winding induces a voltage in the secondary winding.
d) primary distribution voltage is supplied to customers through the secondary bus.
e) both (a) and (d) - CORRECT ANSWER - c) primary voltage applied to the primary
winding induces a voltage in the secondary winding.