Single-Phase Transformers Quiz
Authored by RUBEN TOMEO GARCIA
Engineering
12th Grade
Used 2+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of a transformer?
To store electrical energy
To increase the frequency of electrical energy
To transmit electrical energy between systems with different voltages
To convert AC to DC
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of transformer is most commonly used in residential systems?
Protection transformers
Instrumentation transformers
Single-phase transformers
Three-phase transformers
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two main windings in a transformer called?
Primary and secondary
Inductive and capacitive
Input and output
High voltage and low voltage
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the no-load test?
To calculate the voltage drop
To assess the short-circuit impedance
To determine the transformation ratio and core losses
To measure the efficiency of the transformer
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the transformation ratio of a transformer depend on?
The load current
The number of turns of the windings
The type of core material
The frequency of the input voltage
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main cooling medium used in transformers?
Solid materials
Gas
Air and mineral oil
Water
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for the efficiency of a transformer?
η = P₁ / P₂
η = P₂ / (P₂ + Pfe + Pcu) * 100
η = P₂ / P₁
η = (Pcu + Pfe) / P₂
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