Electrical Machines In a DC Shunt Motor if the load current increases then field flux increases. decreases remains constant. decreases. increases. decreases remains constant. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of cage rotors offers the following advantages all of below. less noise. locking tendency is reduced. uniform torque. all of below. less noise. locking tendency is reduced. uniform torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? demagnetization cross magnetization All of these magnetization demagnetization cross magnetization All of these magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be zero. more than core loss. less than core loss. equal to core loss. zero. more than core loss. less than core loss. equal to core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 57.1%. 88.8%. 48.0%. 59.2%. 57.1%. 88.8%. 48.0%. 59.2%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on synchronous reactance excitation both 1and 2 load angle synchronous reactance excitation both 1and 2 load angle ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS