Electrical Machines When R2 is rotor resistance, X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running condition will be R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on synchronous speed. core loss component. rotor speed. shaft torque. synchronous speed. core loss component. rotor speed. shaft torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC shunt generator builds up 230 V when driven in clockwise direction. In case it is driven in anti clockwise direction, other things remaining unchanged, then the voltage build up is not possible 230 V some what less than 230 V some what more than 230 V not possible 230 V some what less than 230 V some what more than 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC compound motor can be reversed by interchanging armature connections. series field connections. armature or field connections. shunt field connections. armature connections. series field connections. armature or field connections. shunt field connections. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field circuit of a DC shunt motor is opened The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise mechanical loss temperature rise eddy-current loss hysteresis loss mechanical loss temperature rise eddy-current loss hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
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