EMAR302: Bedplates & Crankshafts
Master the Mechanics: Bedplates & Crankshafts Quiz
Test your knowledge on the critical components of engine design with the Bedplates & Crankshafts Quiz. This quiz covers essential aspects of engine mechanics, providing a comprehensive examination of topics that are vital for engineering students and professionals alike.
Whether you're preparing for certification or just looking to reinforce your understanding, this quiz will challenge your grasp of:
- Crankshaft dynamics
- Bedplate fun
ctions - Engine assembly and maintenance
- Safety protocols in engine operation
The main function of the tie bolts in a large two stroke engine is to:
Stiffen the bedplate in the region of the main bearings
Accept most of the tensile loading from the firing forces when in operation
Mount the engine bedplate securely to the hull of the vessel
Connect the crosshead securely to the piston rod assembly
The main reason counterweights are added to a crankshaft is to:
Minimise the piston side thrust
Minimise the piston end thrust
Provide uniform loading and wear of the main bearings
Increase the strength of the crank webs
A crankshaft whose centre of gravity coincides with its centre line is said to be:
Dynamically balanced
Statically balanced
Counter balanced
Resonantly balanced
In fully-built and semi-built crankshafts, how can any slippage to the shrink fit be identified?
By inspecting the locking arrangement provided
By checking thet the dowels and bolts are still intact
By checking the reference marks are in alignment
Through checking the performance of the engine.
Which of the following is one of the major advantages of resin chocking over cast iron chocking of an engine bedplate?
Better vibration damping characteristics
Better compressive strength
There is 100% contact, with no surface preparation required
None of these answers is correct
Crankshaft deflection readings are taken in order to get a positive indication of:
Worn main bearing journals
Torsional bedplate distortion
Worn crankshaft thrust bearings
Bearing shell shim dimensions
The possibility of damage from operating an engine at critical speed is reduced with the aid of:
Elastic engine mounts
A vibration damper
A cast iron bedplate with good flexible properties
The fuel governor will not allow the engine to run at critical speed
With regards to a crankcase explosion, which of these statements is incorrect:
The oil-air mixture needs to be above the LEL and the HEL
Crankcase explosion doors are required at every unit on large engines
The primary explosion is more severe than the secondary explosion
The wire gauze on the crankcase doors helps to reduce flame energy
A modern oil mist detector head works on the principle of:
Light obcsuring a photo-cell
Photo-luminescence
Light scatter around a barrier
Two lights that change brightness when oil is present
Why are lightening holes incorporated into large main engine bedplate?
In order to reduce the weight of the bedplate
In order for lighting to be installed within the bedplate
In order for the oil-mist detectors to be fitted
In order for the oil to drain back to the sump of the engine
{"name":"EMAR302: Bedplates & Crankshafts", "url":"https://www.supersurvey.com/QPREVIEW","txt":"Test your knowledge on the critical components of engine design with the Bedplates & Crankshafts Quiz. This quiz covers essential aspects of engine mechanics, providing a comprehensive examination of topics that are vital for engineering students and professionals alike.Whether you're preparing for certification or just looking to reinforce your understanding, this quiz will challenge your grasp of:Crankshaft dynamicsBedplate functionsEngine assembly and maintenanceSafety protocols in engine operation","img":"https:/images/course3.png"}