Electrical Machines A 240 V dc series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 Ω. The value of resistance which must be added to obtain rated torque at 1000 rpm is 6 Ω 2.2 Ω 1.9 Ω 5.7 Ω 6 Ω 2.2 Ω 1.9 Ω 5.7 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a finite negative value 0 ∞ a positive finite value a finite negative value 0 ∞ a positive finite value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series booster is a separately excited DC generator. permanent magnet DC generator. series wound DC generator. shunt wound DC generator. separately excited DC generator. permanent magnet DC generator. series wound DC generator. shunt wound DC generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of low resistivity. low viscosity. high viscosity. low BDV. low resistivity. low viscosity. high viscosity. low BDV. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following motors DC excitation is not required? hysteresis motor 3-phase synchronous generator 3-phase synchronous motor reluctance motor hysteresis motor 3-phase synchronous generator 3-phase synchronous motor reluctance motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the inner cage offers high resistance and low reactance. low resistance and low reactance. low resistance and high reactance. high resistance and high reactance. high resistance and low reactance. low resistance and low reactance. low resistance and high reactance. high resistance and high reactance. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS