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Test: Electrical Machines & Power Systems- 1 - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test GATE Electrical Engineering (EE) 2024 Mock Test Series - Test: Electrical Machines & Power Systems- 1

Test: Electrical Machines & Power Systems- 1 for Electrical Engineering (EE) 2024 is part of GATE Electrical Engineering (EE) 2024 Mock Test Series preparation. The Test: Electrical Machines & Power Systems- 1 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Electrical Machines & Power Systems- 1 MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electrical Machines & Power Systems- 1 below.
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Test: Electrical Machines & Power Systems- 1 - Question 1

In practice, while performing O.C. test on transformer input voltage applied to__________ winding, while performing S.C.test input voltage applied to________________winding.

Test: Electrical Machines & Power Systems- 1 - Question 2

In a single phase, full wave bridge circuit and in three phase, delta full wave bridge circuit, the ripple voltage frequency is always 

Test: Electrical Machines & Power Systems- 1 - Question 3

A 3φ, Induction Motor had Tmax as 300 N-m with a supply of 440 V, 50 Hz. If the supply is changed to 220 V, 25 Hz new Tmax is

Test: Electrical Machines & Power Systems- 1 - Question 4

The operating range of slip of an induction machine when it is operating in generating mode

Test: Electrical Machines & Power Systems- 1 - Question 5

In a capacitor start induction motor the power factor of main winding is 0.866 lag. The power factor of auxiliary winding should be      

Test: Electrical Machines & Power Systems- 1 - Question 6

A 4 pole dynamo with wave wound armature has 51 slots containing 20 conductors in each slots. The induced emf is 357 volts and the speed is 8500rpm. The flux per pole will be

Test: Electrical Machines & Power Systems- 1 - Question 7

A 4 pole short shunt wave wound compound generator supplies 25 kW at terminal voltage of 500 V. The armature resistance is 0.1 Q, series field resistance is 0.15 Q and shunt field resistance is 126.875 Q. The emfgenerated is____________

Test: Electrical Machines & Power Systems- 1 - Question 8

A 230 V d.c. series motor develops its rated output at 1500 rpm while taking 20 A. Armature and series field resistance are 0.6 Q and 0.4 Q respectively. To obtain rated torque at 1000 rpm, external resistance mustbe added is____________

Test: Electrical Machines & Power Systems- 1 - Question 9

A shut Machine Connected to 250 V supply has an armatureresistance of 0.12 Ω and field  resistance of 100 Ω.  Then the ratio of the speed of machine as a generator to the machine as a motor, if the line current is 80A in both cases is____________

Test: Electrical Machines & Power Systems- 1 - Question 10

A 3φ, 50 Hz, 400 V, induction motor with 10 poles, running at speed of 540 rpm. If the number of poles reduced to 8, the newoperating slip is____________

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