In a DC shunt motor for zero armature current we get speed ______(a) Non-zero and minimum(b) Zero(c) Non-zero and maximum(d) Doesn’t depend on armature currentI got this question in an interview for job.My question is from Operating Characteristics of DC Shunt Motor -1 topic in division Characteristics of DC Motors of DC Machines

In a DC shunt motor for zero armature current we get speed ______(a) N

1.	In a DC shunt motor for zero armature current we get speed ______(a) Non-zero and minimum(b) Zero(c) Non-zero and maximum(d) Doesn’t depend on armature currentI got this question in an interview for job.My question is from Operating Characteristics of DC Shunt Motor -1 topic in division Characteristics of DC Motors of DC Machines
Answer» Correct option is (c) Non-zero and maximum To elaborate: For zero armature CURRENT we get some non-zero value, indicated by positive intercept on SPEED characteristics. As armature current is INCREASED speed of DC SHUNT motor starts DECREASING due to increase in voltage drop at armature resistance.

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