Belt slippage may arise from________________?
Show answer Hide answer
Answer: D. all of the above
Explanation
Belt slippage occurs when frictional forces between the belt and pulley face are insufficient to transmit torque. Heavy operating loads demand high driving friction that loose belts simply cannot provide without slipping. Undersized driving pulleys reduce the total contact area, lowering the available friction needed for power transfer. Power transmission belts rely on tension and friction against pulley rims to transfer rotational mechanical energy. Friction depends directly on the coefficient of friction, contact wrap angle, and effective belt tension forces. Proper mechanical maintenance requires regular tension checks and pulley alignment inspections to ensure reliable operation.
Heavy load causes slippage only when combined with inadequate belt tension or insufficient pulley contact area. A loose belt causes slippage by failing to generate the normal forces required for adequate friction. An overly small driving pulley reduces wrap area, which contributes directly to overall belt slippage problems.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. During steady fluid flow, any fluid particle experiences an acceleration of________________?
Show answer Hide answer
Answer: C. zero
Steady fluid flow requires that flow characteristics at any given point remain constant over time. Local fluid acceleration is calculated as the partial derivative of velocity with respect to time. Since flow properties...
Q2. Ball-bearing screws are commonly found in this application_____________________?
Show answer Hide answer
Answer: D. steering mechanism
Ball-bearing screws are commonly found in vehicle steering mechanisms for smooth operation. Recirculating balls eliminate sliding friction between the screw threads and the mating nut. This high-efficiency mechanical lin...
Q3. Liquids are substances that_________________?
Show answer Hide answer
Answer: E. none of the above
Liquids exhibit slight compressibility under high pressure rather than being completely incompressible. Liquid volumes change noticeably with variations in temperature due to thermal expansion effects. All real liquids p...
Q4. At low temperatures (e.g., 75°C), steel notched-bar impact values____________________?
Show answer Hide answer
Answer: B. decreases markedly
Ferritic steels experience a well documented ductile to brittle transition temperature range. Lowering the temperature causes notched bar impact strength values to drop dramatically and rapidly. Impact energy absorption...
Q5. An Allen bolt is defined as___________________?
Show answer Hide answer
Answer: C. provided with hexagonal depression in head
An Allen bolt or socket head cap screw features a recessed hexagonal socket in its head. An Allen wrench or hex key is inserted into this hexagonal depression to tighten the fastener. This recessed design allows fastener...
Q6. Cold working processes involve________________?
Show answer Hide answer
Answer: A. increases the fatigue strength
Cold working plastically deforms metal at temperatures below its recrystallization threshold. This plastic deformation introduces a high density of dislocations that impede further slip. The resulting work hardening and...