Lifting magnets are not used as material handling devices for: 1. P.I.G. iron 2. Cast iron 3. Steel 4. Plastic Which hoist is often used in erection work? 1. Magnetic lifting hois... Lifting magnets are not used as material handling devices for: 1. P.I.G. iron 2. Cast iron 3. Steel 4. Plastic Which hoist is often used in erection work? 1. Magnetic lifting hoist 2. Electric hoist 3. Hand chain hoist 4. All of the above Braking system is invariably incorporated in case of: 1. Electric hoist 2. Magnetic hoist 3. Hand chain hoist 4. All of the above
Understand the Problem
The question is asking about the use of different materials in lifting magnets and hoists, specifically highlighting which materials are not used for certain lifting devices and which types of hoists are commonly used in erection work.
Answer
1. Plastic 2. Electric hoist 3. Electric hoist
- Plastic
- Electric hoist
- Electric hoist
Answer for screen readers
- Plastic
- Electric hoist
- Electric hoist
More Information
Lifting magnets are ineffective for non-magnetic materials like plastic. Electric hoists are commonly used in erection work and require braking systems for safety.
Tips
A common mistake is to assume any hoist can be used in all scenarios; specific tasks require specific equipment.
Sources
- Materials Handling - Mechanical Engineering - GeekMCQ - geekmcq.com
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