Test: Boiler & Steam Turbine - 1 - Mechanical Engineering MCQ

Match List-I (Name of boiler) with List-II (Special features) and select the correct answer using the codes given below the lists 
      List-I                       List-II
A. Lancashire       1. High pressure water tube
B. Cornish             2. Horizontal double fire tube
C. La Mont            3. Vertical multiple fire tube
D. Cochran           4. Low pressure inclined water tube
                              5. Horizontal single fire tube

Which one of the following is the fire-tube boiler? 

There is no steam drum in 

Consider the following components:
1. Radiation evaporator 
2.Economiser
3. Radiation super heater
4.Convection super heater

In the case of Benson boiler, the correct sequence of the entry of water through these components is: 

When inspection doors on the walls of boilers are opened, flame does notleap out because 

Assertion (A): Fire tube boilers have quick response to load changes.Reason (R): Fire tube boilers have large water storage capacity and hence smallpressure changes can meet sudden demands. 

Assertion (A): Benson boiler is much lighter than other boilers Reason (R): Boiler pressure raised to the critical pressure in Benson boiler permits doing away with steam (separating) drums. 

The Rateau turbine belongs to the category of 

A Curtis stage, Rateau stage and a 50% reaction stage in a steam turbine are examples of 

A steam turbine receives steam steadily at 10 bar with an enthalpy of 3000kJ/kg and discharges at 1 bar with an enthalpy of 2700 kJ/kg. The workoutput is 250 kJ/kg. The changes in kinetic and potential energies are negligible. The heat transfer from the turbine casing to the surroundingsis equal to 

The practice to use steam on the shell side and cooling water on the tubeside in condensers of steam power plant is because 

What is the ratio of the isentropic work to Euler's work known as? 

In an ideal impulse turbine, the 

Steam enters a De Laval steam turbine with an inlet velocity of 30 m/s and leaves with an outlet velocity of 10 m/s. The work done by 1kg of steam is 

Which one of the following velocity triangles represents the one at the exit of a radial impeller with forward curved blades?

(u2 = peripheral velocity, v2 = absolute velocity, w2 = relative velocity). 

In an axial flow impulse turbine, energy transfer takes place due to