Mechanical Maintenance Questions Flashcards
What is the main function of a coupling in a machine?
a) Transmit torque between two shafts
b) Reduce vibration
c) Align pulleys
d) Secure bearings
a) Transmit torque between two shafts
Which tool is used to check the flatness of a surface?
a) Dial indicator
b) Feeler gauge
c) Straight edge
d) Torque wrench
c) Straight edge
What is the purpose of a key in a shaft-key assembly?
a) To provide axial movement
b) To secure components to the shaft
c) To align the shaft
d) To prevent belt slippage
b) To secure components to the shaft
What is the primary purpose of lubrication in a mechanical system?
a) Increase heat generation
b) Reduce friction and wear
c) Secure fasteners
d) Align components
b) Reduce friction and wear
Which type of bearing is best suited for radial loads?
a) Ball bearing
b) Thrust bearing
c) Roller bearing
d) Sleeve bearing
c) Roller bearing
What is the function of a torque wrench?
a) Measure the tension in a belt
b) Tighten bolts to a specific torque
c) Check the flatness of a surface
d) Measure electrical current
b) Tighten bolts to a specific torque
Which component reduces friction between moving parts in a machine?
a) Bearing
b) Gear
c) Pulley
d) Coupling
a) Bearing
What is the purpose of a V-belt in a pulley system?
a) To increase friction between the pulley and the belt
b) To transfer rotational motion and power
c) To prevent slippage under load
d) Both b and c
d) Both b and c
What is the best method to align two shafts in a machine?
a) Visual inspection
b) Feeler gauge
c) Laser alignment tool
d) Straight edge
c) Laser alignment tool
What type of tool is used to remove a press-fitted bearing?
a) Bearing puller
b) Hammer
c) Wrench
d) Screwdriver
a) Bearing puller
When installing a conveyor belt, what is the first step?
a) Tensioning the belt
b) Aligning the pulleys
c) Turning off the power to the system
d) Measuring the length of the belt
c) Turning off the power to the system
What is the correct way to tension a conveyor belt?
a) Tighten until the belt no longer moves
b) Follow the manufacturer’s specifications
c) Leave it slightly loose
d) Over-tighten to ensure no slippage
b) Follow the manufacturer’s specifications
What is the primary purpose of tracking a conveyor belt? a) Ensure the belt runs in the center of the system
b) Increase belt speed
c) Reduce friction
d) Align the motor with the pulleys
a) Ensure the belt runs in the center of the system
Which tool is commonly used to splice a conveyor belt?
a) Belt cutter
b) Clamping press
c) Screwdriver
d) Welding torch
b) Clamping press
How often should conveyor belts be inspected for wear and tear?
a) Monthly
b) Weekly
c) Daily
d) According to the manufacturer’s recommendations
d) According to the manufacturer’s recommendations
What is the best method to align two shafts in a machine?
a) Visual inspection
b) Feeler gauge
c) Laser alignment tool
d) Straight edge
d) Straight edge
What type of tool is used to remove a press-fitted bearing?
a) Bearing puller
b) Hammer
c) Wrench
d) Screwdriver
a) Bearing puller
What is the main function of a gearbox in a mechanical system?
a) Convert rotational speed and torque
b) Align shafts
c) Reduce friction
d) Store mechanical energy
a) Convert rotational speed and torque
What is the primary purpose of a mechanical seal in a pump?
a) Prevent fluid leakage
b) Increase pump speed
c) Align pump components
d) Reduce vibration
a) Prevent fluid leakage
Which tool is commonly used to measure shaft runout?
a) Dial indicator
b) Torque wrench
c) Feeler gauge
d) Vernier caliper
a) Dial indicator
What is the purpose of a keyway in a shaft?
a) Increase friction
b) Prevent rotation between a shaft and a component
c) Provide lubrication
d) Reduce weight
b) Prevent rotation between a shaft and a component
What is a flywheel’s primary function in a mechanical system?
a) Reduce friction
b) Store rotational energy
c) Align moving parts
d) Provide lubrication
b) Store rotational energy
What is the first step in troubleshooting an electrical motor that won’t start?
a) Replace the motor
b) Check the power supply
c) Inspect the bearings
d) Test the insulation resistance
b) Check the power supply
What is the purpose of a preventive maintenance schedule?
a) Maximize equipment downtime
b) Reduce unexpected equipment failures
c) Increase operational costs
d) Eliminate the need for spare parts
Answer: b) Reduce unexpected equipment failures
Which tool is commonly used to detect bearing wear?
a) Stethoscope
b) Infrared thermometer
c) Vibration analyzer
d) Torque wrench
c) Vibration analyzer
What is the most likely cause of overheating in an electric motor?
a) Low supply voltage
b) Overloading
c) Loose connections
d) Misaligned bearings
b) Overloading
What should be done if a machine vibrates excessively during operation?
a) Increase operating speed
b) Inspect for misalignment or imbalance
c) Reduce lubricant levels
d) Replace the motor
b) Inspect for misalignment or imbalance
