WorksheetsConstruction BSME 3-2
Total questions: 20
Worksheet time: 10mins
What is the primary function of a drilling rig?
For excavation, trenching, scooping, and loading
For site clearing and preparation
For creating boreholes, anchors, micropiles, and rock drilling
For connecting motor and pump to absorb misalignment
What is the function of the swing tower/kingpost in a backhoe?
Converts fuel to mechanical energy
Lets the backhoe swing left/right
Provides controlled rotation and torque
Absorbs misalignment between motor and pump
Which part of a drilling rig is responsible for rotating the drill pipe?
Crown block
Derrick
Rotary drive
Mud pump
Which component of the mine slurry pump helps in moving the slurry by creating centrifugal force?
Pump cover
Impeller
Bearing assembly
Rear guard
Which lubricant is typically used in areas prone to high pressure, shock loads, and constant movement?
Engine oils
Gear oils
Grease
Hydraulic oils
What is the backbone of excavators, cranes, loaders, and drilling rigs?
Transmission fluids
Hydraulic oils
Water-based hydraulic fluid
Synthetic blend hydraulic fluid
Which type of hydraulic fluid is most cost-friendly and fire-resistant?
Synthetic blend hydraulic fluid
Water-based hydraulic fluid
Chevron Rando® HDZ
Shell Water-Glycol S2 CX
What is a disadvantage of mineral-based construction oils?
High chemical resistance
Lower temperature stability
Greater oxidation stability
Lower coefficient of friction
What is the reason for using oil in engines (Automotive & Industrial)?
High speed and cooling through circulation
High heat and friction; oils contain detergents and dispersants
High temperature and pressure; seals compression chamber
To reduce the need for maintenance
What is the purpose of oil in compressors (Reciprocating, Rotary)?
High speed and cooling through circulation
High heat and friction; oils contain detergents and dispersants
High temperature and pressure; seals compression chamber
To increase machinery speed
What is the primary function of hydraulic systems in excavators, cranes, and bulldozers?
Power transmission and lubrication of internal pump components
Cooling of engine components
Reduction of noise in machinery
Cleaning of mechanical parts
What type of lubricant is used for hydraulic systems, pins, and bushings in excavators?
Gear oil
Hydraulic oil (ISO VG 46)
Solid lubricant (Graphite)
PTFE (Teflon)
Which type of oil is recommended for the Bulldozer's transmission and final drive?
SAE 15W-40 engine oil
EP grease
Gear oil (SAE 90/140)
Synthetic grease
What is the primary function of the detergent and dispersant additives in the engine oil used for dump trucks?
Ensures smooth lifting and prevents gear damage
Cleans engine and prevents soot buildup
Keeps engine clean and protects against wear
Ensures smooth rotation and protects parts from water contamination
Which type of lubrication system is commonly used in mining and construction?
Single-line systems
Dual-line systems
Hydraulic systems
Reservoir systems
Which of the following is an advantage of a manual lubrication system?
Ensures consistent lubrication, reduces wear and breakdowns.
Saves time and labor — no need for manual greasing.
Lower initial cost — no need for automatic equipment.
Extends equipment life and reduces maintenance costs.
Which type of equipment is ideal for manual lubrication systems?
Heavy equipment like excavators and mining machines.
Smaller machines or older equipment with few lubrication points.
Machines requiring continuous uptime and reliability.
High-volume industrial operations.
What is the purpose of a strict rope-lube schedule for cranes?
To prevent slippage contamination
To avoid water ingress
To prevent internal corrosion
To inspect for play
What is the recommended maintenance for axle hubs and differentials in wheel loaders with wet brakes?
Inspect seals for leaks
Use EP gear oil
Correct oil grade and watch for brake material in oil
Grease daily
What is a common lubrication problem for drilling rigs?
Water contamination and emulsified oil.
Oil thickening from oxidation.
Fine particle ingress causing wear.
Overheating from insufficient oil film.
