Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is co- sinusoidal flat-topped sinusoidal rectangular co- sinusoidal flat-topped sinusoidal rectangular ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss? 800W, 1600W 1000W , 1400W 1400W, 1000W 1600W, 800W 800W, 1600W 1000W , 1400W 1400W, 1000W 1600W, 800W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 pole synchronous machine is operating at 3000 rpm. Find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm) ? ωe = ωm ωe = 1/2*ωm ωe = 2*ωm ωe = 4*ωm ωe = ωm ωe = 1/2*ωm ωe = 2*ωm ωe = 4*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Copper brushes in DC machine are used where low voltage and high currents are involved. in both of above cases. None of these where high voltage and low current. where low voltage and high currents are involved. in both of above cases. None of these where high voltage and low current. 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 minimum zero maximum All of these minimum zero maximum ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the function of inter pole in DC generator? To serve the economical aspects. To neutralize the distortion of main field flux due to armature reaction. Both option B and C. To get a superior commutation. To serve the economical aspects. To neutralize the distortion of main field flux due to armature reaction. Both option B and C. To get a superior commutation. ANSWER DOWNLOAD EXAMIANS APP
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