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Module 6.1
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Right to left
Left to right
Q1
Score: 1
series wound
capacitor start
separately excited
shunt wound
Q2
Score: 1
Increasing the field current
Increasing the armature current
Decreasing the load current
Decreasing the field current
Q3
Score: 1
Commutator
Motor
Brush
Armature
Q4
Score: 1
Speed will reduce
Speed will remain almost constant
Speed will increase in proportion to reduction in load
Speed will increase abruptly
Q5
Score: 1
Either DC or AC
AC
DC
Neither DC or AC
Q6
Score: 1
Brushes should be of proper grade, size and material
Brushes should smoothly run in the holders
Smooth, concentric commutator properly undercut
Brushes should be of proper grade, size, material, run smoothly in the holders and concentric commutator properly undercut
Q7
Score: 1
Zig-zag
Series
Series-parallel
Parallel
Q8
Score: 1
Armature emf and armature speed
Armature current and armature emf
Armature speed and armature current
Armature speed and armature emf
Q9
Score: 1
4
2
12
8
Q10
Score: 1
motor is not connected to the ground
power failure or power disconnected
brushes in poor contact with commutator
circuit breaker tripped or fuse blows due to overloading or short circuit
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