Electrical Machines The noise resulting from vibrations of lamination set by magnetic forces, is termed as hum. boo. magnetostriction. zoom. hum. boo. magnetostriction. zoom. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of rotation of DC motor is reversed by Reversing armature connection or field connection. Reversing supply connection. Adding resistance to field circuit. Interchanging armature and field connection. Reversing armature connection or field connection. Reversing supply connection. Adding resistance to field circuit. Interchanging armature and field connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to withstand bending moment due to weight of the armature. any unbalanced magnetic pull on the armature core. twisting strains due to transmission of torque. All of these bending moment due to weight of the armature. any unbalanced magnetic pull on the armature core. twisting strains due to transmission of torque. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a dc motor the ratio Eb / E is indicative of ratio of starting to running current. ratio of starting to running torque. ratio of input to output voltage. efficiency. ratio of starting to running current. ratio of starting to running torque. ratio of input to output voltage. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed by a synchronous motor depends on excitation and load angle supply voltage and excitation supply voltage and load angle supply voltage, load angle and excitation excitation and load angle supply voltage and excitation supply voltage and load angle supply voltage, load angle and excitation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Example of double excited machine is Synchronous motor. None of these Both are correct. DC Shunt Motor Synchronous motor. None of these Both are correct. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
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