Question

xp 145 pdf xp14.4 pdf xP 146pdf 58239-dt-content-rid-15 1 85064-1/courses/ENT 1 0400 1-1 86-03 1 9/Hw8%20-%20DC%20Motors% ENT104 Electricity HW8- DC Motors Name Date 1. In a de shumt motor, armature windings are 7. When voltage is applied to a de motor but the armature is not turning, this condition is called coerected directly to A. commutator sections B. slip rings C. interpoles D. None of the answers are correct. A. locked rotor B. locked torque C. counter emf D. thermo rotor 2. The twisting force of a motor is called Identify the following motors 8. The following schematic represents a A. counter emf B. torque C. horsepower D. slip speed 3. The voltage gencrated hy a de motor armature is called A counter ems B. orqu C armature reaction D. counter rpm 4. Coummer emf will increase as A. rpm increases B. ield pole strength decreases C. counter emf is constant D. None of the answers are corroct A. series B. shunt C. compound 5. Interpoles are used 10 None of the answers are correct D. 9?The following schematic represents a A. increase torque B. reduce sparking at the brushes C. increase counter emf D, prevent locked rosor condition 6. Interpoles are sometimes called A. anti-omd poles B. commutating poles C. sceque poles D. None of the answers are comect. ?.series B. shunt C. coempound

Answer 1

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