DC Motors
For a D.C. shunt motor if the excitation is changed

Torque will remain constant
Torque, power and speed, all will change
Torque and power both will change
Torque will change but power will remain constant

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DC Motors
The speed of a dc motor is

None of the listed here
inversely proportional to flux per pole
inversely proportional to applied voltage
Directly proportional to flux per pole

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