What types of motors are used in cranes

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / milinda4p

9 Answers
43488 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

Difference between ups

32 Answers Emerson, Tata Power,

What is C2-M2-E2 class in circuit breaker. why and where it is to be used in circuit breaker

1 Answers

Can anybody tell me how to calculate(formula) earth flat size(for copper and aluminium).

3 Answers

what is the use of capacitor in online ups?

6 Answers Emerson, ups,

What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?

0 Answers

electrical engineering giving priority for insulators rather than conductors, why ?

5 Answers

In Star type and Delta type Motors, If one phase will miss/Break then which phase winding will burn and why?

4 Answers

which is best ac or dc

3 Answers

how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

0 Answers

what is smart&micro grid technology?under coal gassification?

0 Answers

How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

0 Answers

How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

0 Answers VECL,

For more Electrical Engineering Interview Questions Click Here