DEA overall dimensions of transformer

Which of the following is not a factor that determines the size of a transformer?

• a) Power output

• b) Voltage rating

• c) Frequency

• d) Material composition

What is the typical voltage rating of a transformer used in a residential area?

• a) 120 V

• b) 240 V

• c) 480 V

• d) 600 V

What is the most common material used for the core of a transformer?

• a) Copper

• b) Aluminum

• c) Steel

• d) Lead

Which of the following is a type of transformer that is commonly used in power stations?

• a) Step-up transformer

• b) Step-down transformer

• c) Distribution transformer

• d) Auto transformer

What is the typical frequency of power supply in North America?

• a) 50 Hz

• b) 60 Hz

• c) 100 Hz

• d) 120 Hz

What is the approximate efficiency of a transformer?

• a) 50%

• b) 75%

• c) 90%

• d) 100%

What are the overall dimensions of a transformer?

• A. It depends on the power rating of the transformer

• B. All transformers have the same overall dimensions

• C. The dimensions of a transformer are determined by the frequency of the input power

• D. The dimensions of a transformer are determined by the type of core material used

What is the overall size of a typical transformer?

• a) Small

• b) Medium

• c) Large

What is the function of the transformer oil?

• a) To cool the transformer

• b) To provide insulation

• c) To provide lubrication

Which of the following factors affect the noise level of a transformer?

• a) Core material

• b) Winding design

• c) Cooling system

• d) All of the above