Electrical Machines In a DC Shunt Motor if the load current increases then field flux increases. remains constant. decreases. decreases increases. remains constant. decreases. decreases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to number of turns in coil. All of these frequency of waveform. flux per pole. number of turns in coil. All of these frequency of waveform. flux per pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss? 1800 Watt. 1920 Watt. 1960 Watt. 980 Watt. 1800 Watt. 1920 Watt. 1960 Watt. 980 Watt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following factors improve commutation in a dc machine ? 1. High contact resistance of brushes 2. High inductance of the coils undergoing commutation 3. Shifting of brushes in the direction of rotation for a generator and in the opposite direction For a motor 4. Narrow width for the commutation bars Select the correct answer using the codes given below : Codes : 2, 3 and 4 1, 2, and 3 1 and 3 1, 2 and 4 2, 3 and 4 1, 2, and 3 1 and 3 1, 2 and 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Type of single phase motor having highest power factor at full load is shaded pole type. capacitor start. split phase. capacitor run. shaded pole type. capacitor start. split phase. capacitor run. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of connection is made in between the inter-pole and the field winding? Compound. None of the options. Parallel. Series. Compound. None of the options. Parallel. Series. ANSWER DOWNLOAD EXAMIANS APP
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