History of Steam Engines Quiz

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What is the purpose of the slide valve in the engine cylinder?

To transfer the reciprocating motion of the piston rod to the crankshaft

To control the steam pressure from the boiler

To convert rotary motion to reciprocating motion

To admit and exhaust steam from the engine cylinder (correct)

Why is the engine described as 'double acting'?

Because it uses steam expansively throughout the entire stroke

Because it allows steam to escape through the underside of the slide valve

Because it produces power on both the upward and downward stroke (correct)

Because it continuously admits steam throughout the entire stroke

What term is used to describe cutting off the steam supply and allowing the steam in the cylinder to expand?

Expansive use of steam (correct)

Steam expansion

Steam admission

Steam conversion

What component of the engine is described as 'eccentric' or 'off center' with respect to the crankshaft?

The sheave of the eccentric Signup and view all the answers

What is the purpose of lubricators in the engine?

To feed oil between sliding surfaces to reduce friction and wear Signup and view all the answers

What is the function of the crosshead in the engine?

To guide the piston rod directly into the cylinder without side-to-side motion Signup and view all the answers

What has contributed to the nearly obsolete status of steam engines?

The greater complexity of the steam engine compared to the steam turbine Signup and view all the answers

In what situation are steam engines still used today?

To power restored vintage locomotives, sawmills, steamships, and agricultural traction engines Signup and view all the answers

What is the construction type of the steam engine described in Figure 2?

Single cylinder, double-acting, vertical engine with a D-slide valve Signup and view all the answers

What component of the steam engine discharges lubricating oil with exhaust steam?

Stuffing box and gland Signup and view all the answers

Where are steam engines rarely seen in service today?

In power plants generating electricity Signup and view all the answers

What part of the steam engine is responsible for controlling the admission of steam to the cylinder?

D-slide valve Signup and view all the answers

What is used to squeeze the packing tightly into the box around the rod?

Gland Signup and view all the answers

What is fitted into the lowest part of the cylinder and valve box for the removal of water caused by steam condensation?

Drain cocks Signup and view all the answers

In most steam engines, when does the admission of steam stop?

Before the end of the stroke Signup and view all the answers

What regulates engine speed with the change in load requirements?

Governor Signup and view all the answers

What is often fitted to dampen or even out the changes of speed caused by varying steam pressure and loads?

Flywheel Signup and view all the answers

What does the frame of the steam engine provide?

Means of securing the engine on its foundation Signup and view all the answers

What does a small vertical single cylinder, double-acting steam engine have in its steam chest?

Piston type steam slide valve Signup and view all the answers

What needs to be cleared from flywheels, pulleys, drive belts, and other moving parts before starting a steam engine?

Debris Signup and view all the answers