Design Electrical Machines Freshers Online Exam Quiz
Design Electrical Machines Freshers GK Quiz. Question and Answers related to Design Electrical Machines Freshers. MCQ (Multiple Choice Questions with answers about Design Electrical Machines Freshers
How many total high voltage windings are present?
Options
A : 1
B : 2
C : 3
D : 4
What is the range of current density for large power transformer with self oil cooled type?
Options
A : 1-2 A per mm2
B : 1.5-2.5 A per mm2
C : 2.2-3.2 A per mm2
D : 2-3 A per mm2
What is the range of current density for small and medium power transformers?
Options
A : 1-2 A per mm2
B : 1-2.5 A per mm2
C : 1.1-2.2 A per mm2
D : 1.1-2.3 A per mm2
What is the rating for cylindrical type of winding with circular conductors?
Options
A : 5000-10000 kVA
B : 5000-8000 kVA
C : 160-10000 kVA
D : 200-10000 kVA
What does the area of conductors in primary and secondary windings depend on?
Options
A : current
B : voltage
C : power
D : current density
What is the condition for minimum loss condition?
Options
A : current density in primary < current density in secondary
B : current density in primary > current density in secondary
C : current density in primary = current density in secondary
D : current density in primary >= current density in secondary
What is the relationship between the losses and the maximum efficiency on the current density?
Options
A : current density increases, losses decrease, efficiency increases
B : current density increases, losses increase, efficiency increases
C : current density decreases, losses decrease, efficiency increases
D : current density decreases, losses increase, efficiency increases
What is the relationship between temperature and the current density?
Options
A : current density is directly proportional to the temperature
B : current density is directly proportional to the square of the temperature
C : current density is indirectly proportional to the square of the temperature
D : current density is indirectly proportional to the temperature
What is the formula for obtaining the current in the primary winding?
Options
A : current in primary winding = kVA per turn * 103 * primary voltage
B : current in primary winding = kVA per phase * 103 * primary voltage
C : current in primary winding = kVA per turn * 103 / primary voltage
D : current in primary winding = kVA per phase * 103 / primary voltage
What is the maximum current per conductor for helical winding?
Options
A : from 12 A and above 12 A
B : from 300 A and above 300 A
C : upto 40 A
D : upto 80 A
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