Electrical Machines Flashing of DC generator means creation of residual magnetism by a DC source. increasing flux density by providing extra ampere-turns in field. None of these neutralization of residual magnetism. creation of residual magnetism by a DC source. increasing flux density by providing extra ampere-turns in field. None of these neutralization of residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Motor for constant load torque, what will happen to the armature current if armature resistance increases? None of above. Decreases. Remain unchanged Increases. None of above. Decreases. Remain unchanged Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Generator works on the principle of production both A and B. dynamically induced emf. None of these static induced emf. both A and B. dynamically induced emf. None of these static induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound? 541.67V, 200 rpm. 541.67V, 250 rpm. 2166.67V, 270 rpm. 2166.67V, 230 rpm. 541.67V, 200 rpm. 541.67V, 250 rpm. 2166.67V, 270 rpm. 2166.67V, 230 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine shape of armature MMF wave is? Peaky in nature. Saddle shape. Triangular and directed towards brush axis. Triangular and directed towards main pole. Peaky in nature. Saddle shape. Triangular and directed towards brush axis. Triangular and directed towards main pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC cumulatively compounded motor delivers rated load torque at rated speed. If the series field is short-circuited, then the armature current and speed will both increase both decrease increase and decrease respectively decrease and increase respectively both increase both decrease increase and decrease respectively decrease and increase respectively ANSWER DOWNLOAD EXAMIANS APP
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