What types of motors are used in cranes

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / milinda4p

9 Answers
43192 Views
BPDB, BUBT, CNH, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What types of motors are used in cranes..

Answer / anil

d.c. series motor

bcoz its starting torque is high and also speed is inversly
proportional 2 load

Is This Answer Correct ?

48 Yes

14 No

What types of motors are used in cranes..

Answer / milinda4p

Ok..I have gone through a training in a port and I found out
that in large cranes(ex: Quay cranes) most of the time for
Hoisting loads DC series motors are used(IMPSA). But as it
has several maintainence to be done frequently ( ex:
Commutator replacements etc.) and the emerging technology of
power electronics newer quay cranes (ex: ZPMC) are using
Squirrel cage induction motors.
But there arn't any wound rotor induction motors used
probably due to higher costs.

Except the hoists in other functions such as Gantry travel,
Trolley travel, Boom hoist etc Always Squirrel cage
induction motors are used

Is This Answer Correct ?

24 Yes

4 No

What types of motors are used in cranes..

Answer / nisha

synchronous motor coupled with variable frequecy drive

Is This Answer Correct ?

21 Yes

12 No

What types of motors are used in cranes..

Answer / biki

Ac Slip Ring Motor

Is This Answer Correct ?

15 Yes

9 No

What types of motors are used in cranes..

Answer / indi

slip ring induction motor

Is This Answer Correct ?

2 Yes

0 No

What types of motors are used in cranes..

Answer / milinda4p

Biki: AC slip ring motor?? I think you mean wound rotor
induction motor as it is the only AC motor which has slip rings?
Biswa: Normally squirrel cage rotors are made of two copper
rings connected by copper bars. So how to make it high
resistive?

Is This Answer Correct ?

4 Yes

3 No

What types of motors are used in cranes..

Answer / mounica

squirrel cage induction motor

Is This Answer Correct ?

6 Yes

6 No

What types of motors are used in cranes..

Answer / k.prakashchandra

Rotor wound motors.

Is This Answer Correct ?

7 Yes

12 No

What types of motors are used in cranes..

Answer / biswa

in addition to milinda i would like to ad one more things
that for cranes application squirrel cage induction motor
uses high resistive rotor bar to provide high starting
torque compromising the extra loss.

Is This Answer Correct ?

4 Yes

10 No

Post New Answer

More Electrical Engineering Interview Questions

sir please send me previous year questions of jspl through which i could prepare myself fpr the test.

64 Answers FGH, HFT, Jindal, Jindal Steel and Power, JSP, JSW, Lin Engineering,

If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)

0 Answers TATA,

define the power factor in one word

12 Answers

Why do we use copper cable for HT Supply and why not Aluminium?

0 Answers

explain how the power is distributed from a power plant to a consumer.explain step wise in detail

1 Answers

why high voltage is reqiured or L.T. panels? what type of tests should be taken for electrical panels?

2 Answers

How transformer winding & oil gets heat.

3 Answers

IN CONTROL SYSTEMS Y WE NEED TO KNOW THE STABILITY OF THE SYSTEM?WHAT IS ITS PRACTICAL USE?

2 Answers

Why the power factor of the alternator in power plant is kept .8 lagging. Can't we maintain it at 1.

3 Answers

how will you determine the short circuit capacity of a network

3 Answers Dalkia,

What is the disadventage of gland earthing(power cable) if any. ?

0 Answers

what is the diference between base speed and rated speed in motor

1 Answers Bhel,

For more Electrical Engineering Interview Questions Click Here