Electrical Machines For a DC machine having P no of pair of pole pairs, Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance? PZL/ 4Sa PZL/4S PZL/4Sa² PZL/4Sp² PZL/ 4Sa PZL/4S PZL/4Sa² PZL/4Sp² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. mechanical rotatory system. synchronizing power co efficient. damping torque. restoring torque. mechanical rotatory system. synchronizing power co efficient. damping torque. restoring torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In most condition which frame of motor will be preferred? Totally enclosed fan coiled. Splash proof. Drip proof. Open type. Totally enclosed fan coiled. Splash proof. Drip proof. Open type. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively large and thin less and thin large and thick less and thick large and thin less and thin large and thick less and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 168.75 W 112.5 W 75 W 50 W 168.75 W 112.5 W 75 W 50 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Conservator tank is used for better cooling of transformer. to take up the expansion of oil due to temperature rise. None of these to act as an oil storage. for better cooling of transformer. to take up the expansion of oil due to temperature rise. None of these to act as an oil storage. ANSWER DOWNLOAD EXAMIANS APP
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