Question
Download Solution PDFIn stator resistance starter, if applied voltage across motor terminals is reduced by 50%, then torque is reduced to ________ of the full voltage value.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
In a stator resistance starter, if the applied voltage across the motor terminals is reduced, the torque produced by the motor is affected according to the square of the voltage.
The relationship between the torque (T) and the voltage (V) in a DC or AC motor can be expressed as:
T α V2
Calculation
Given, V2 = 0.5V1
\({T_2\over T_1}=({V_2\over V_1})^2\)
\({T_2\over T_1}=({0.5V_1\over V_1})^2\)
T2 = 0.5T1
T2 = 25% of T1
Last updated on May 29, 2025
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