Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V, I and P V/2, I/2 and P/4 V, I/2 and P/2 V/2, I and P/2 V, I and P V/2, I/2 and P/4 V, I/2 and P/2 V/2, I and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to frequency of waveform. All of these flux per pole. number of turns in coil. frequency of waveform. All of these flux per pole. number of turns in coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a finite negative value a positive finite value ∞ 0 a finite negative value a positive finite value ∞ 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator beyond critical resistance will generate maximum voltage. maximum power. no voltage. maximum current. maximum voltage. maximum power. no voltage. maximum current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 40, s = 5.79 %. P = 60, s = 0.96 %. P = 20, s = 3.33 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating winding are used to rectify the flux density waveform at throughout the air gap. interpole region. None of these region under main pole. throughout the air gap. interpole region. None of these region under main pole. ANSWER DOWNLOAD EXAMIANS APP
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