DC Motors
In D.C. shunt motors as load is reduced

The speed will increase abruptly
The speed will reduce
The speed will increase in proportion to reduction in load
The speed will remain almost/constant

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DC Motors
As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit

Armature is temporarily open circuited
A high value resistor is connected across the field winding
A resistance is connected in series with armature
A resistance is connected parallel to the armature

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DC Motors
In variable speed motor

A weaker commutating field is needed at low speed than at high speed
None of these
A stronger commutating field is needed at low speed than at high speed
Same commutating field is needed at low speed than at high speed

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