What will be the impact of reduced voltage...

Question 1 / 270705eccefa4bacbc34ba4d4816e

Question 1 of 270705eccefa4bacbc34ba4d4816e

What will be the impact of reduced voltage applied to an AC induction motor during the starting period?

Question 1 of 27070

What will be the impact of reduced voltage applied to an AC induction motor during the starting period?

🔍 Key Concepts

• AC induction motor torque vs voltage relationship (how starting torque changes when voltage is reduced) • Starting current behavior in induction motors and its dependence on applied voltage and rotor slip • Difference between starting conditions (locked-rotor) and normal running conditions

💭 Think About

• If you reduce the applied voltage at start, what happens to the magnetic flux in the motor and how does that affect induced current in the rotor? • Is starting current approximately proportional to voltage, or does it change in some other way at standstill? • How does motor torque mathematically relate to applied voltage (e.g., is it proportional to V, V², or something else?)

✅ Before You Answer

• Recall that locked-rotor current is roughly proportional to applied voltage in an induction motor • Remember that starting torque depends on both voltage and current, and often varies roughly with the square of the applied voltage under starting conditions • Before choosing, verify that your option matches both the change in starting current and the change in starting torque when voltage is reduced

Question 1 of 27070

What will be the impact of reduced voltage applied to an AC induction motor during the starting period?

increase the starting current and increase the starting torque

increase the starting current and decrease the starting torque

decrease the starting current and decrease the starting torque

decrease the starting current and increase the starting torque

Question 1 / 270705eccefa4bacbc34ba4d4816e

Question 1 of 270705eccefa4bacbc34ba4d4816e

What will be the impact of reduced voltage applied to an AC induction motor during the starting period?

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Question 1 of 27070

What will be the impact of reduced voltage applied to an AC induction motor during the starting period?