Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is √3 3 1/3 1/√3 √3 3 1/3 1/√3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are slot wedges in a DC machine made of? Silicon steel. Mild steel. Fibre. Cast iron. Silicon steel. Mild steel. Fibre. Cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Damper winding is used to decrease the load current. suppress the hunting. both 1 and 2. increase the load current. decrease the load current. suppress the hunting. both 1 and 2. increase the load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Line voltage. Rotor current. Slip. Running torque. Line voltage. Rotor current. Slip. Running torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V DC series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is 2.2 ohms. 5.7 ohms. 1.9 ohms. 6 ohms. 2.2 ohms. 5.7 ohms. 1.9 ohms. 6 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A simple method of increasing the voltage of a DC generator is to increase the source frequency. increase the number of turns in armature coil. increase the number of turns in field coil. increase the speed of shaft rotation. increase the source frequency. increase the number of turns in armature coil. increase the number of turns in field coil. increase the speed of shaft rotation. ANSWER DOWNLOAD EXAMIANS APP
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