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Questions and Answers
What is the primary function of an electric generator?
What is the primary function of an electric generator?
- To transform voltage levels
- To store electrical energy
- To convert mechanical energy to electrical energy (correct)
- To convert electrical energy to mechanical energy
Which of the following does NOT affect the EMF of a wire moving in a magnetic field?
Which of the following does NOT affect the EMF of a wire moving in a magnetic field?
- The magnetic field
- The diameter of the wire in the field (correct)
- The velocity of the wire in the field
- The length of the wire in the field
When is the current zero in an electric generator?
When is the current zero in an electric generator?
- When the wire segments move perpendicular to the field (correct)
- When the wire segments move parallel to the field
- During the first 180° of the wire’s rotation
- It is never zero
What is the main difference between an electric generator and an electric motor?
What is the main difference between an electric generator and an electric motor?
What is the effective voltage for most household wall outlets in the United States?
What is the effective voltage for most household wall outlets in the United States?
What happens to the mechanical energy in an electric generator?
What happens to the mechanical energy in an electric generator?
What happens to the current in the loop when it is in the vertical position?
What happens to the current in the loop when it is in the vertical position?
How often does the direction of the current in the loop change?
How often does the direction of the current in the loop change?
What is the primary function of a generator?
What is the primary function of a generator?
What happens to the current in the loop as it rotates?
What happens to the current in the loop as it rotates?
What is the product of in a generator?
What is the product of in a generator?
What is the purpose of the brush and slip-ring arrangement?
What is the purpose of the brush and slip-ring arrangement?
What is the relationship between the average power PAC and the maximum power Pmax?
What is the relationship between the average power PAC and the maximum power Pmax?
How is the effective current Ieff related to the maximum current Imax?
How is the effective current Ieff related to the maximum current Imax?
What is the frequency of voltage oscillation in the United States?
What is the frequency of voltage oscillation in the United States?
What is the relationship between the effective voltage Veff and the maximum voltage Vmax?
What is the relationship between the effective voltage Veff and the maximum voltage Vmax?
What is the formula to express the average power PAC in terms of effective current Ieff and resistance R?
What is the formula to express the average power PAC in terms of effective current Ieff and resistance R?
What is the value of effective voltage Veff in a typical US wall outlet?
What is the value of effective voltage Veff in a typical US wall outlet?
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