87001. The draught is the __________ of pressures above and below the fire grate.
87002. The function of an eccentric is to provide __________ motion to the slide valve.
87003. The water tubes in a Babcock and Wilcox boiler are
87004. In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the atmospheric pressure.
87005. Blow off cock in a boiler is used to
87006. The cut-off ratio is the reciprocal of expansion ratio,
87007. In a receiver type compound engine, the high pressure and low pressure cylinders
87008. The damper in a steam boiler is provided to control the draught (i.e. rate of flow of air) and thus regulate the rate of generation of steam.
87009. The clearance in the engine cylinder
87010. Which of the following is not a boiler mounting?
87011. The ratio of the clearance volume to the swept volume is called
87012. The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called
87013. The Locomotive boiler has
87014. The shell of the Cochran boiler is made hemispherical
87015. A __________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
87016. Willian's law holds good for throttle-governed engine, but not for cut-off governed engine.
87017. Which of the following is required for a steam condensing plant ?
87018. The missing quantity is mainly due to cylinder condensation and a small amount of steam leakage past the valves and piston.
87019. There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called
87020. The ratio of the volume at cut-off to the swept volume is called
87021. The function of a D-slide valve is to exhaust steam from the cylinder at proper moment.
87022. The mechanical draught produces more draught than natural draught.
87023. The water tube boilers produce steam at a __________ pressure than that of fire tube boilers.
87024. The mechanical draught __________ with the amount of smoke.
87025. When the expansion of steam is carried out in a single cylinder and then exhausted into the atmosphere or a condenser, the engine is said to be a simple steam engine.
87026. The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks
87027. In a single acting steam engine
87028. The cylindrical shell of a Lancashire boiler has diameter from
87029. Which of the following boiler works on a forced circulation of water?
87030. The clearance in the engine cylinder has no effect on the steam consumption.
87031. The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as
87032. Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler ?
87033. By compounding the expansion of steam in two or more cylinders, the ratio of expansion
87034. The water tubes in a simple vertical boiler are
87035. The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as
87036. In a La-mont boiler, there is a __________ circulation of water and steam.
87037. The diameter of internal flue tubes of a Lancashire boiler is about __________ that of its shell.
87038. Locomotive boiler produces steam at a very high rate.
87039. Which of the following is a fire tube boiler ?
87040. Which of the following are boiler accessories ?
87041. All steam engines work on
87042. The capacity and working pressure.of a Cornish boiler is __________ as compared to Lancashire boiler.
87043. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is __________ the piston speed of single acting steam engine.
87044. A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called
87045. When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
87046. The ratio of heat equivalent to brake power to the energy supplied in steam is known as
87047. When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
87048. The length of Lancashire boiler varies from
87049. The ratio of brake power to the indicated power is known as
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