Explanation: Basic torque and EMF expressions are same for both AC and DC machines as the fundamental principles underlying the operation of AC and DC machines are same. 7. The final forms of the expression for generated EMF and torque,for AC and DC machines differ, because ____________
A. the fundamental principles underlying their operation are same
B. the fundamental principles underlying their operation are different
C. their construction details are same
D. their construction details are different
Answer:A
Explanation: Basic torque and EMF expressions are same for both AC and DC machines as the fundamental principles underlying the operation of AC and DC machines are same. 7. The final forms of the expression for generated EMF and torque,for AC and DC machines differ, because ____________
A. the fundamental principles underlying their operation are same B. the fundamental principles underlying their operation are different C. their construction details are same D. their construction details are different
Explanation: Though AC and DC machine have same operating fundamental principles, their construction details differ.