Electrical Machines The field system of an alternator is usually excited 3 - Φ, 50 Hz and 400 V. 230 V AC. 250 / 250 V DC. 110 / 220 V AC. 3 - Φ, 50 Hz and 400 V. 230 V AC. 250 / 250 V DC. 110 / 220 V AC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 5 %. 2.67 %. 30 %. 1.5 %. 5 %. 2.67 %. 30 %. 1.5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? pure inductive load pure capacitive load None of these pure resistive load pure inductive load pure capacitive load None of these pure resistive load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is All of these zero minimum maximum All of these zero minimum maximum ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 18.25%. 14.28%. 16.67%. 15.30%. 18.25%. 14.28%. 16.67%. 15.30%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The overall power factor of an on load transformer is always unity. is always leading. is always lagging. depends on the power factor of the load. is always unity. is always leading. is always lagging. depends on the power factor of the load. ANSWER DOWNLOAD EXAMIANS APP
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