Electrical Machines A flat compound generator is obtained from compound generator by connecting a variable resistor in parallel with the shunt field in parallel with the series field in series with the shunt field in series with the series field in parallel with the shunt field in parallel with the series field in series with the shunt field in series with the series field ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines shape of net flux density is? saddle shape peaky in nature sine wave flat tapped or trapezoidal saddle shape peaky in nature sine wave flat tapped or trapezoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is cheaper in cost. lighter in weight. easy to cast owing to its low melting point and is easily available. of low resistivity. cheaper in cost. lighter in weight. easy to cast owing to its low melting point and is easily available. of low resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is more and maximum torque decreases less and maximum torque increases less and maximum torque decreases more and maximum torque remains constant more and maximum torque decreases less and maximum torque increases less and maximum torque decreases more and maximum torque remains constant ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Shunt Motor having armature resistance of 0.5 Ω and 2A armature current at no-load, when the armature current is changed to 20A at loaded condition the speed is 1000 r.p.m. What is the speed at no-load? 1130 r.p.m. 1037.5 r.p.m. 4575.4 r.p.m. 963.8 r.p.m. 1130 r.p.m. 1037.5 r.p.m. 4575.4 r.p.m. 963.8 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1203 1080 1000 1200 1203 1080 1000 1200 ANSWER DOWNLOAD EXAMIANS APP
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