Electrical Machines Transformer cooling and insulating oil must be of low viscosity. low BDV. high viscosity. low resistivity. low viscosity. low BDV. high viscosity. low resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V-curve of synchronous motor shows the variation of power factor and dc excitation at constant load All of these supply voltage and field current at constant excitation power factor and supply voltage during hunting power factor and dc excitation at constant load All of these supply voltage and field current at constant excitation power factor and supply voltage during hunting ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The fall in speed of the DC generator due to increase in load can be corrected by increasing the excitation. reducing the load voltage. increasing the input to the prime mover. cooling the armature. increasing the excitation. reducing the load voltage. increasing the input to the prime mover. cooling the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If input of a transformer is square wave the output will be sine wave. triangular wave. square wave. pulsed wave. sine wave. triangular wave. square wave. pulsed wave. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of cage rotors offers the following advantages uniform torque. less noise. locking tendency is reduced. all of below. uniform torque. less noise. locking tendency is reduced. all of below. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 6 pole lap connected DC generator with 480 conductors has armature resistance of 0.06 Ω. If the conductors are reconnected to from a wave winding other things remaining unchanged, the value of armature resistance will be 0.54 Ω. 0.54 Ω. 0.01 Ω. 0.06 Ω. 0.54 Ω. 0.54 Ω. 0.01 Ω. 0.06 Ω. ANSWER DOWNLOAD EXAMIANS APP
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