Electrical Machines In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will increase. remain constant. any of the above. decrease. increase. remain constant. any of the above. decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Blv2. Bl2v2. Blv. Bl2v. Blv2. Bl2v2. Blv. Bl2v. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct-on-line (DOL) starters are not suitable for starting large DC motors, because the starting torque becomes low. the motor may run away. the starting current will be enormously high. the motor may not start. the starting torque becomes low. the motor may run away. the starting current will be enormously high. the motor may not start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC compound motor can be reversed by interchanging armature connections. armature or field connections. shunt field connections. series field connections. armature connections. armature or field connections. shunt field connections. series field connections. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 474 V 240 V 234 V 6 V 474 V 240 V 234 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field divertor resistance for a DC series motor is of order of 100 Ω 10 Ω 50 Ω 0.1 Ω 100 Ω 10 Ω 50 Ω 0.1 Ω ANSWER DOWNLOAD EXAMIANS APP
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