Electrical Machines At slip s = 1 torque developed in machine is electromagnetic torque. maximum torque. none. starting torque. electromagnetic torque. maximum torque. none. starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for voltage build up in self excited generator? All of these Field winding resistance should be less than critical resistance. Poles should contain residual flux. Field winding should be properly connected to armature winding. All of these Field winding resistance should be less than critical resistance. Poles should contain residual flux. Field winding should be properly connected to armature winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following will vary the maximum torque? rotor reactance X None of these both 1 and 2 rotor resistance R rotor reactance X None of these both 1 and 2 rotor resistance R ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 15.30%. 14.28%. 16.67%. 18.25%. 15.30%. 14.28%. 16.67%. 18.25%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Shunt Motor has disadvantage(s) of none of above. not suitable for rapidly changing loads. less expensive. constant speed. none of above. not suitable for rapidly changing loads. less expensive. constant speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along direct axis and indirect axis quadrature axis and direct axis quadrature axis and interpolar axis direct axis and interpolar axis direct axis and indirect axis quadrature axis and direct axis quadrature axis and interpolar axis direct axis and interpolar axis ANSWER DOWNLOAD EXAMIANS APP
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