Design Electrical Machines Design Preliminaries Online Exam Quiz
Design Electrical Machines Design Preliminaries GK Quiz. Question and Answers related to Design Electrical Machines Design Preliminaries. MCQ (Multiple Choice Questions with answers about Design Electrical Machines Design Preliminaries
What is the range of the copper factor in PMDC motors?
Options
A : 0.1-0.3
B : 0.1-0.2
C : 0.1-0.4
D : 0.2-0.4
What is the value of the reluctance factor in the calculation of the intensity of magnetic field?
Options
A : 1
B : 2
C : 1.15
D : 1,45
What is the range of the permeance coefficient in the PMDC motors?
Options
A : 3-5
B : 4-9
C : 4-8
D : 3-9
What is the usual value of the permeance coefficient of the PMDC motor?
Options
A : 4
B : 5
C : 6
D : 7
What is the formula for the armature resistance in PMDC motor?
Options
A : armature resistance = (Diameter + length)*total number of armature conductors/1.2 * 104 * number of parallel paths in the armature2
B : armature resistance = (Diameter + length)*total number of armature conductors*1.2 * 104 * number of parallel paths in the armature2
C : armature resistance = (Diameter + length)*total number of armature conductors/1.2 * 104 + number of parallel paths in the armature2
D : armature resistance = (Diameter + length)+total number of armature conductors/1.2 * 104 * number of parallel paths in the armature2
What is the value of the demagnetizing coefficient if the total number of teeth is greater than 107?
Options
A : d = angle/360
B : d = angle/240
C : d = angle/540
D : d = angle/720
What happens to the diameter when the poles are more than 2?
Options
A : diameter = 2 * diameter * (number of armature teeth embraced by one coil/total number of armature teeth)
B : diameter = 2.32 * diameter * (number of armature teeth embraced by one coil/total number of armature teeth)
C : diameter = 2.32 * diameter * (number of armature teeth embraced by one coil * total number of armature teeth)
D : diameter = 2 * diameter / (number of armature teeth embraced by one coil/total number of armature teeth)
What is the formula for the flux density for the PM motors?
Options
A : flux density = residual flux density / 1 + (1.11/permeance coefficient)
B : flux density = residual flux density * 1 + (1.11/permeance coefficient)
C : flux density = residual flux density / 1 + (1.11*permeance coefficient)
D : flux density = residual flux density * 1 + (1.11*permeance coefficient)
What factor does the permeance coefficient depend upon?
Options
A : geometry of the magnet
B : geometry of the magnet, airgap, associated non-portions of the magnetic circuit
C : airgap
D : associated non-portions of the magnetic circuit
How is the value of the magnetic to electrical boarding ratio related with the volume of iron and volume of copper?
Options
A : high magnetic to electrical boarding ratio gives high copper volume and high iron volume
B : high magnetic to electrical boarding ratio gives low copper volume and high iron volume
C : low magnetic to electrical boarding ratio gives low copper volume and low iron volume
D : low magnetic to electrical boarding ratio gives low copper volume and high iron volume
Chemical Engineering Basics - Part 1 more Online Exam Quiz
Design Electrical Machines Design Fan
Design Electrical Machines Design Field Winding 1
Design Electrical Machines Design Machines Limitations Design
Design Electrical Machines Design Magnet Coils
Design Electrical Machines Design Output Equations
Design Electrical Machines Design Principles
Design Electrical Machines Design Rotor
Design Electrical Machines Design Rotor 1