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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
1 kg.m is equal to

102 Joules
427 Joules
None of these
9.81 Joules

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Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler is

Stationary fire tube boiler
All of these
Internally fired boiler
Horizontal boiler

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Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

T1 /176.5H
88.25H/T1
T1 /88.25H
176.5H/T1

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

Vb = 0.5 V cosα
Vb = V² cosα
Vb = 0.5 V² cosα
Vb = V cosα

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of flue tube in a Cornish boiler is _________ that of the shell.

One-third
Three-fifth
One-fourth
Two-fifth

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Steam Boilers, Engines, Nozzles and Turbines
The draught may be produced by a

A steam jet
Mechanical fan
All of these
Chimney

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