Home » Mechanical Engineering » Steam Boilers and Engines

Connecting rod: functional role in a reciprocating engine Evaluate the statement: 'The function of a connecting rod is not to convert the piston's reciprocating motion into rotary motion.' Choose the correct truth value.

Difficulty: Easy

True
False
True, but only at low speeds
False; valid only for two-stroke engines

Correct Answer: True

Explanation:

Concept
The crank converts reciprocating motion to rotary motion. The connecting rod primarily transmits force and motion between piston and crank, acting as a link under combined axial and bending loads.

Conclusion
The statement is correct.

Final Answer
True

← Previous Question Next Question→

More Questions from Steam Boilers and Engines

Flywheel: principal function in engines Identify the primary purpose of a flywheel in a reciprocating engine with cyclic torque fluctuations. Choose the correct option.
Cornish boiler geometry: flue tube diameter relative to shell In a single-flue Cornish boiler, state the typical ratio of flue tube diameter to shell diameter. Choose the correct proportion.
Willan's line (steam engine): straight-line relation Willan's line for a steam engine is an approximately straight-line plot between steam consumption per hour and which output measure? Choose the correct option.
Steam engine valve losses: initial cylinder pressure vs. boiler pressure At the beginning of the piston stroke, how does the cylinder steam pressure compare with the boiler pressure (considering throttling and valve losses)? Choose the correct relation.
Locomotive/marine boiler safety valve: commonly used type Select the safety valve type predominantly used on locomotive and marine boilers, where orientation and vibration demand a non-gravity mechanism. Choose the correct option.
Boiler power (boiler horsepower): choose the correct standard definition used in steam engineering. According to classic practice, boiler ‘‘power’’ is referenced to a fixed rate of evaporation ‘‘from and at 100°C’’ (dry saturated steam). Select the definition that correctly states boiler power (BHP).
Uniflow (uniflow-scavenged) steam engine: identify the correct flow path of steam through the cylinder. Definition focus: where admission occurs and where exhaust leaves in a unidirectional flow pattern for better thermal efficiency. Choose the correct statement about steam entry and exhaust in a uniflow engine.
Cut-off governing of steam engines: what parameter is varied to control output? Context: In cut-off governing, the point of admission is altered while speed/load change, without throttling the inlet pressure. Choose what is actually controlled under cut-off governing.
Boiler type for fluctuating steam demand: identify the most suitable option. Context: Rapid changes in steam load require boilers that respond quickly and handle variable draught and firing conditions. Choose the boiler best suited to fluctuating steam demand.
Single-acting vs double-acting steam engine: comparative power output. Context: In a double-acting engine, steam performs work on both sides of the piston each cycle; in a single-acting engine, only one side. Choose the correct comparison of power output for the same size and speed.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion