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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The performance of a boiler is measured by the

Amount of water evaporated per hour
Steam produced in kg/kg of fuel burnt
Steam produced in kg/h
All of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio (p₂/p₁) is given by

(p₂/p₁) = [(n + 1)/2] n - (1/n)
(p₂/p₁) = [2/(n + 1)] n/(n-1)
(p₂/p₁) = [2/(n - 1)] n/(n + 1)
(p₂/p₁) = [(n - 1)/2] n + (1/n)

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Steam Boilers, Engines, Nozzles and Turbines
The number of water level indicators in a boiler are generally __________ in number.

Four
Two
Three
One

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Steam Boilers, Engines, Nozzles and Turbines
Boiler parameters are expressed by

Tonnes/hr. of steam
Pressure of steam in kg/cm²
All of these
Temperature of steam in °C

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Steam Boilers, Engines, Nozzles and Turbines
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as

Steam preheater
Steam condenser
Economiser
Steam boiler

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?

A steam turbine develops higher speeds
The efficiency of steam turbine is higher
All of these
The steam consumption is less

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