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1.
The range of horsepower of electric motor drives for rolling mills is of the order of
2.
A pole changing type squirrel cage motor used in derricks has four, eight and twenty-four poles. In this, the lowest speed is used for
3.
A pole changing type squirrel cage motor used in derricks has four, eight and twenty-four poles. In this, the medium speed is used for
4.
The advantage of 3-speed A.C cage Motor as compared to simple squirrel cage induction motor used in winches are
5.
Which of the following drive can be used for derricks and winches?
6.
1/2 hour rated motors are used for
7.
Heavy Duty cranes are used in
8.
15 minutes rated Motor is suitable for
9.
In overhead traveling cranes
10.
The traveling speed of the crane varies from