Design Electrical Machines Assessment Online Exam Quiz
Design Electrical Machines Assessment GK Quiz. Question and Answers related to Design Electrical Machines Assessment. MCQ (Multiple Choice Questions with answers about Design Electrical Machines Assessment
How many types of gears are made use of in the PMDC motors?
Options
A : 1
B : 2
C : 3
D : 4
How many types of bearings are made use of in the PMDC motors?
Options
A : 2
B : 3
C : 4
D : 5
How many principle types of lubricants are available in the PMDC motor?
Options
A : 2
B : 3
C : 5
D : 7
How many primary reasons are present for the thermal failure?
Options
A : 3
B : 4
C : 2
D : 5
What is the relation of the brush shift with the demagnetization effect?
Options
A : brush shift is directly proportional to the demagnetization effect
B : brush shift is indirectly proportional to the demagnetization effect
C : brush shift is directly proportional to the square of the demagnetization effect
D : brush shift is indirectly proportional to the square of the demagnetization effect
What does the inability of the motor to dissipate the heat cause?
Options
A : causes high starting current
B : insulation failure
C : causes low starting current
D : causes high starting current
What does the increase of the resistance of the motor winding cause?
Options
A : high starting current
B : low motor torque
C : low starting current
D : high motor torque
What is the solution to prevent the increase of resistance of motor windings?
Options
A : higher ventilation arrangement
B : reduction in the number of poles
C : increase the coil windings
D : insulate the windings
What is the relation between number of poles and flux reversal in the armature?
Options
A : number of poles is directly proportional to the flux reversal in the armature
B : number of poles is indirectly proportional to the flux reversal in the armature
C : number of poles is directly proportional to the square of the flux reversal in the armature
D : number of poles is indirectly proportional to the square of the flux reversal in the armature
What is the relation between number of poles and total volume of magnet?
Options
A : number of poles is directly proportional to the total volume of the magnet
B : number of poles is indirectly proportional to the total volume of the magnet
C : number of poles is directly proportional to the square of the total volume of the magnet
D : number of poles is indirectly proportional to the square of the total volume of the magnet
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