Electrical Machines Find the synchronous reactance of alternators in which a given field current of 200 A on short circuit and a generated emf of 50 V on open circuit. Armature resistance is 0.1 ohm 0.25Ω. 0.5Ω. 0.23Ω. 1Ω. 0.25Ω. 0.5Ω. 0.23Ω. 1Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the outer cage offers high resistance and high reactance. low resistance and high reactance. low resistance and low reactance. high resistance and low reactance. high resistance and high reactance. low resistance and high reactance. low resistance and low reactance. high resistance and low reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between the supply voltage and the back emf. the rotating stator flux and rotor flux. None of these magnetizing electric current and back emf. the supply voltage and the back emf. the rotating stator flux and rotor flux. None of these magnetizing electric current and back emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are 4% and 5% from no load to full load. Consider the governors operating at 50Hz on no load. How will the machine share, if the load is 600 MW? 200 MW and 400MW generator 1 gets over load None of these generator 2 gets over load 200 MW and 400MW generator 1 gets over load None of these generator 2 gets over load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have more breakdown torque. less breakdown torque. higher efficiency. leading power factor. more breakdown torque. less breakdown torque. higher efficiency. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is cumulatively compounded. shunt connected. series connected. deferentially compounded. cumulatively compounded. shunt connected. series connected. deferentially compounded. ANSWER DOWNLOAD EXAMIANS APP
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