Electrical Machines If a DC Series motor is connected across an AC supply it will run at normal speed. burn. not run. run at lower speed. run at normal speed. burn. not run. run at lower speed. ANSWER DOWNLOAD EXAMIANS APP
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 0.5Ω. 0.25Ω. 0.23Ω. 1Ω. 0.5Ω. 0.25Ω. 0.23Ω. 1Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer OC test is conducted on HV side and SC test is conducted on LV side both Oc and SC tests are conducted on HV side OC test is conducted on LV side and SC test is conducted on HV side both OC and SC tests are conducted on LV side OC test is conducted on HV side and SC test is conducted on LV side both Oc and SC tests are conducted on HV side OC test is conducted on LV side and SC test is conducted on HV side both OC and SC tests are conducted on LV side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound? 541.67V, 200 rpm. 541.67V, 250 rpm. 2166.67V, 270 rpm. 2166.67V, 230 rpm. 541.67V, 200 rpm. 541.67V, 250 rpm. 2166.67V, 270 rpm. 2166.67V, 230 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 1/√5 1/3 1/√2 2/√5 1/√5 1/3 1/√2 2/√5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature voltage control is considered suitable for a DC motor driven at constant current. torque. speed. power. current. torque. speed. power. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS