A 125 volt DC motor is rated at 10 kW. What...

Question 1 / 270705eccefa3bacbc34ba4d47f33

Question 1 of 270705eccefa3bacbc34ba4d47f33

A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?

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Question 1 of 27070

Q

A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?

🔍 Key Concepts

• Relationship between power (kW), voltage (V), and current (A) in DC circuits • How to convert kilowatts to watts • Checking if an answer is reasonable in size for the given power and voltage

💭 Think About

• What is the basic formula that links power, voltage, and current in a DC circuit? Rearrange that formula to solve for current. • First change 10 kW into watts, then plug into your formula with 125 V and solve for current. • After you compute the current, which answer choice is closest to your calculated value?

✅ Before You Answer

• Be sure you converted kilowatts to watts correctly before calculating. • Verify you used the correct formula for DC power, not AC three-phase power. • Check that your final current value is not unrealistically small or huge for a 10 kW motor at 125 V.

Question 1 of 27070

Q

A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?

A

4.6 amps

B

8.0 amps

C

46.2 amps

D

80 amps

Question 1 / 270705eccefa3bacbc34ba4d47f33

Question 1 of 270705eccefa3bacbc34ba4d47f33

A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?

Back

Question 1 of 27070

Q

A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?

🔍 Key Concepts

• Relationship between power (kW), voltage (V), and current (A) in DC circuits • How to convert kilowatts to watts • Checking if an answer is reasonable in size for the given power and voltage

💭 Think About

• What is the basic formula that links power, voltage, and current in a DC circuit? Rearrange that formula to solve for current. • First change 10 kW into watts, then plug into your formula with 125 V and solve for current. • After you compute the current, which answer choice is closest to your calculated value?

✅ Before You Answer

• Be sure you converted kilowatts to watts correctly before calculating. • Verify you used the correct formula for DC power, not AC three-phase power. • Check that your final current value is not unrealistically small or huge for a 10 kW motor at 125 V.