Design Electrical Machines Design Rotor 1 Online Exam Quiz
Design Electrical Machines Design Rotor 1 GK Quiz. Question and Answers related to Design Electrical Machines Design Rotor 1. MCQ (Multiple Choice Questions with answers about Design Electrical Machines Design Rotor 1
What is the range of the ratio of radial length of pole to pole pitch?
Options
A : 0.3-1
B : 0.3-1.5
C : 0.7-1
D : 0.7-1.5
What is the value of space factor for the strip on edge winding?
Options
A : 0.8-0.9
B : 0.4
C : 0.65
D : 0.75
What is the range of the leakage coefficient in the pole body?
Options
A : 1.1 to 1.2
B : 1.00 to 1.5
C : 1.15 to 1.2
D : 0.75 to 2.3
What is the range of the permissible values of the flux densities in pole body?
Options
A : 1.4-1.7 Wb per m2
B : 1.5-1.7 Wb per m2
C : 1.4-1.6 Wb per m2
D : 1.5-1.6 Wb per m2
How many factors does the design of rotor of synchronous machines depend upon?
Options
A : 2
B : 3
C : 4
D : 5
What is the formula for the area of cross-section of pole body for rectangular poles?
Options
A : area of cross section of pole body = 0.98 * axial length of the pole * breadth of the pole
B : area of cross section of pole body = 0.98 / axial length of the pole * breadth of the pole
C : area of cross section of pole body = 0.98 * axial length of the pole / breadth of the pole
D : area of cross section of pole body = 1/0.98 * axial length of the pole * breadth of the pole
What is the formula for the area per pole of damper pass provided?
Options
A : area per pole of damper pass = 0.2 * specific electric loading * pole pitch * current density in damper bars
B : area per pole of damper pass = 0.2 * specific electric loading * pole pitch / current density in damper bars
C : area per pole of damper pass = 0.2 * specific electric loading – pole pitch / current density in damper bars
D : area per pole of damper pass = 0.2 + specific electric loading * pole pitch / current density in damper bars
What is the formula for the copper area of the field windings?
Options
A : copper area = full load field mmf * current density in the field winding
B : copper area = full load field mmf / current density in the field winding
C : copper area = full load field mmf + current density in the field winding
D : copper area = full load field mmf – current density in the field winding
What is the formula for the flux in pole body?
Options
A : flux in pole body = leakage coefficient * useful flux per pole
B : flux in pole body = leakage coefficient / useful flux per pole
C : flux in pole body = leakage coefficient – useful flux per pole
D : flux in pole body = leakage coefficient + useful flux per pole
What is the formula for the height of pole body?
Options
A : height of pole body = height of the winding + 0.02
B : height of pole body = height of the winding * 0.02
C : height of pole body = height of the winding – 0.02
D : height of pole body = height of the winding / 0.02
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