Steam Boilers and Engines MCQs

[A]. 0.5 to 1 m

[B]. 1 to 2 m

[C]. 1.25 to 2.5 m

[D]. 2 to 3 m

[A]. blow off cock

[B]. fusible plug

[C]. superheater

[D]. stop valve

[A]. before the economiser

[B]. before the superheater

[C]. between the economiser and chimney

[D]. none of these

[A]. Locomotive boiler

[B]. Lancashire boiler

[C]. Cornish boiler

[D]. Babcock and Wilcox boiler

[A]. indicated power

[B]. brake power

[C]. efficiency

[D]. pressure of steam

[A]. Agree

[B]. Disagree

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[A]. equal power developed in each cylinder for uniform turning moment

[B]. equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders

[C]. equal temperature drop in each cylinder for economy of steam

[D]. all of the above

[A]. to guide motion of the piston rod and to prevent it from bending

[B]. to transfer motion from the piston to the cross head

[C]. to convert heat energy of the steam into mechanical work

[D]. to exhust steam from the cylinder at proper moment

[A]. Agree

[B]. Disagree

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[A]. The cost of the engine, for the same power and economy, is more than that of a simple steam engine.

[B]. The forces in the working parts are increased as the forces are distributed over more parts.

[C]. The ratio of expansion is reduced, thus reducing the length of stroke.

[D]. The temperature range per cylinder is increased, with corresponding increase in condensation.