Electrical Machines In a synchronous generator, if mechanical input is increased with constant excitation, the load angle will decrease either increase or decrease increase None of these decrease either increase or decrease increase None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is lagging power factor None of these unity power factor leading power factor lagging power factor None of these unity power factor leading power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and flux of a DC motor are held constant and voltage applied across it armature is increased by 5%, the speed of the motor will Depends on other factor. Remain unchanged. Increase by 5%. Reduce by 5%. Depends on other factor. Remain unchanged. Increase by 5%. Reduce by 5%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for differential compound motors. shunt motors. series motors. separately excited motors. differential compound motors. shunt motors. series motors. separately excited motors. 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. 6 ohms. 5.7 ohms. 1.9 ohms. 2.2 ohms. 6 ohms. 5.7 ohms. 1.9 ohms. 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 Ω. The value of resistance which must be added to obtain rated torque at 1000 rpm is 6 Ω 5.7 Ω 1.9 Ω 2.2 Ω 6 Ω 5.7 Ω 1.9 Ω 2.2 Ω ANSWER DOWNLOAD EXAMIANS APP
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