Electrical Machines In a DC Shunt Motor if the load current increases then field flux increases. decreases. decreases remains constant. increases. decreases. decreases remains constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motor operation depends on either of these. None of these stationary magnetic field. rotating magnetic field. either of these. None of these stationary magnetic field. rotating magnetic field. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The ventilating ducts in most of DC machine are longitudinal. none of these. radial. radial as well as longitudinal. longitudinal. none of these. radial. radial as well as longitudinal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : Interpoles in dc machines 1. reducearmature reaction effects in the interpolar region 2. have the same dimension as main polls 3. have their windings connected in series with the armature 4. have same number of turns as the armature 5. have the polarity same as that of the main pole ahead in a motor From these, the correct statements are 1, 2 and 3 1, 2, 3 and 5 1, 3 and 5 1 and 3 1, 2 and 3 1, 2, 3 and 5 1, 3 and 5 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For small value armature current Ia the torque developed by a DC series motor is proportional to √Ia. Ia. 1/Ia. Ia2. √Ia. Ia. 1/Ia. Ia2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pole pairs, Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for simple wave-winding ? PZL/4Sa² PZL/4S PZL/4Sp² PZL/ 4Sa PZL/4Sa² PZL/4S PZL/4Sp² PZL/ 4Sa ANSWER DOWNLOAD EXAMIANS APP
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