Electrical Machines Hopkinson test is conducted under which of the following condition? half load any of the above no load full load half load any of the above no load full load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC motor is connected across the AC supply it will Burn. Not run. Run at normal speed. Run at lower speed. Burn. Not run. Run at normal speed. Run at lower speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 115 V 460 V 200 V 230 V 115 V 460 V 200 V 230 V 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 2.2 Ω 5.7 Ω 6 Ω 1.9 Ω 2.2 Ω 5.7 Ω 6 Ω 1.9 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will remains almost constant. The speed will increase abruptly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In most condition which frame of motor will be preferred? Splash proof. Drip proof. Totally enclosed fan coiled. Open type. Splash proof. Drip proof. Totally enclosed fan coiled. Open type. ANSWER DOWNLOAD EXAMIANS APP
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