In case of travelling cranes, the motor preferred for boom hoist is _________.

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Answer :

In case of travelling cranes, the motor preferred for boom hoist is slip ring induction motor.

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Which D.C. motor is generally preferred for cranes and hoists ?

Last Answer : D.C. Series motor is generally preferred for cranes and hoists.

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Description : Is the installation of live boom on hoist recommended?

Last Answer : is the installation of live boom on hoist recommened

Light duty cranes are generally used in _____________.

Last Answer : Light duty cranes are generally used in automobile workshops, pumping stations, power houses.

The speed of a series wound winch motor is controlled by ____________. A. varying the voltage applied to the motor B. the weight of the load on the cargo boom C. overcurrent protection devices in the motor D. a hydraulic speed-limiting governor

Description : The speed of a series wound winch motor is controlled by ____________. A. varying the voltage applied to the motor B. the weight of the load on the cargo boom C. overcurrent protection devices in the motor D. a hydraulic speed-limiting governor

Last Answer : Answer: A

Which of the following conditions will occur if the solenoid coil burns out on a cargo winch with an electrical brake? A. The brake will be set by spring force. B. The motor will overspeed and burn up. C. The load suspended from the cargo boom will fall. D. Nothing will happen; the winch will continue to operate as usual.

Description : Which of the following conditions will occur if the solenoid coil burns out on a cargo winch with an electrical brake? A. The brake will be set by spring force. B. The motor will overspeed and burn ... the cargo boom will fall. D. Nothing will happen; the winch will continue to operate as usual.

Last Answer : Answer: A

George was cleaning the windows on the eighteenth floor of an office block when there was a massive power failure. The electric hoist on his platform was immoblized.So how did he manage to get down before the power was restored? -Riddles

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Last Answer : George walked down the stairs. He was cleaning the inside of the windows.

What is a hoist?

Description : What is it used for?

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What does a hospital hoist weigh?

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Last Answer : Feel Free to Answer

When raising a vehicle on a hoist how should it be positioned?

Description : When raising a vehicle on a hoist how should it be positioned?

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If the output piston is a car hoist was replaced by a piston of twice the area what would happen to the output force?

Description : If the output piston is a car hoist was replaced by a piston of twice the area what would happen to the output force?

Last Answer : What is the answer ?

Would a hydraulic hoist still work as well if the fluid was replaced with air?

Description : Would a hydraulic hoist still work as well if the fluid was replaced with air?

Last Answer : No, air is compressible, hydraulic fluid is not.It would be analogous to trying to use a giant rubber bandinstead of a steel crowbar to pry things apart!

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The winch shown in the illustration will not operate in any speed in the lowering direction and at an abnormal speed in 'first point hoist'. The possible cause is that _______________. EL-0102 A. contactor coil '3M' has many shorted turns B. resistor 'R8-A2' has an open C. contacts '1M' in the power circuit are badly corroded D. master switch contacts 'MS6' have weak springs

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Last Answer : Answer: B

The winch shown in the illustration operates in any of the positions with the master switch in the 'lower' direction, but will not 'hoist' in any of the master switch hoist positions. Which of the listed faults could be the cause? EL-0102 A. Master switch contact 'MS3' may have defective springs. B. Contactor '3M' coil could have an open winding. C. Contact '2M' in the power circuit may be badly corroded. D. Series relay 'FR' may be open.

Description : The winch shown in the illustration operates in any of the positions with the master switch in the 'lower' direction, but will not 'hoist' in any of the master switch hoist positions. Which of the listed faults ... '2M' in the power circuit may be badly corroded. D. Series relay 'FR' may be open.

Last Answer : Answer: A

Which of the listed conditions occur when selection is made for 'third point hoist' on the winch shown in the illustration? EL-0102 A. Master switch contacts '5', '6', '7', '8', and '9' close. B. Contactors '2M', '3M', '4M' and '1A' pick up. C. Contactors '1M', 3M', '1A' and '2A' drop out. D. Master switch contacts '3','4', '6', '8', and '9' close.

Description : Which of the listed conditions occur when selection is made for 'third point hoist' on the winch shown in the illustration? EL-0102 A. Master switch contacts '5', '6', '7', '8', and '9' close. B. Contactors '2M', ' ... ' and '2A' drop out. D. Master switch contacts '3','4', '6', '8', and '9' close.

Last Answer : Answer: D

The purpose of resistor bank 'R1-R5' in the winch circuit shown in the illustration is to ______________. EL-0102 A. limit armature current in lower and 'series field' current in hoist to obtain required speeds B. divert shunt field current for speed control in both directions of operation C. limit armature current in hoist and 'series field' current in lower to obtain required speeds D. regulate the strength of the brake solenoid 'B1-B2' in both directions of operation

Description : The purpose of resistor bank 'R1-R5' in the winch circuit shown in the illustration is to ______________. EL-0102 A. limit armature current in lower and 'series field' current in hoist to ... required speeds D. regulate the strength of the brake solenoid 'B1-B2' in both directions of operation

Last Answer : Answer: C

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Description : What is Hoist Brake ?

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How do construction cranes rise up?

Description : How do construction cranes rise up?

Last Answer : Look at rough terrain mobile crane to see if that’s what you mean.

A man wished to move a block of size 3 m x 3 m weighing 80 kg. The coefficient of friction between the block and the ground is 0.27. Which of the following methods should be used? a.Slide along the ground by pushing b.Ask for cranes c.Pull it d.Tip it over e.Lift it bodily

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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines, refrigerators, rolling mills, lathes, power factor improvement and cranes.

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What types of slots are preferred for the induction motor?

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Which bearings preferred for all large power motor?

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Which D.C. motor is preferred for elevators ?

Last Answer : Cumulative compound D.C. motor is preferred for elevators.

If a D.C. motor is to be selected for conveyors, which motor would be preferred ?

Last Answer : If a D.C. motor is to be selected for conveyors, Series motor would be preferred.

Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an __________ reactor. (A) Homogeneous (B) Graphite moderated (C) Fast breeder (D) Enriched uranium (3% U-235) fuelled

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Why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding?

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What Is The Constant Factor In Case Of R-10 Series Of Preferred Numbers?

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Description : Indicate the second line antitubercular drug that is being preferred to supplement ethambutol + streptomycin in case of hepatotoxicity due to isoniazid/ rifampin/pyrazinamide: A. Ethionamide B. Cycloserine C. Ofloxacin D. Capreomycin

Last Answer : C. Ofloxacin

The antiparkinsonian action of central anticholinergics has the following features except: A. They control tremor more than rigidity B. They produce a low ceiling therapeutic effect C. They are effective in neuroleptic drug induced parkinsonism D. They are the preferred drugs in advanced case

Description : The antiparkinsonian action of central anticholinergics has the following features except: A. They control tremor more than rigidity B. They produce a low ceiling therapeutic effect C. They are effective in neuroleptic drug induced parkinsonism D. They are the preferred drugs in advanced case

Last Answer : D. They are the preferred drugs in advanced cases

Will the new Answerbag be a boom or bust when it opens on Oct 20th?

Description : Will the new Answerbag be a boom or bust when it opens on Oct 20th?

Last Answer : I love ask-public, and won’t be looking elsewhere, unless something happens here.