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This set of Thermal Engineering 2 Multiple Choice Questions & Answers (MCQs) focuses on Thermal Engineering II Set 18
Q1 | Which is the correct advantage of solid fuels out of the given option?
- they have low ignition temperature
- they produce small amount of smoke
- they have higher calorific value
- they do not form any clinker
Q2 | Choose the proper disadvantage of solid fuels out of the given option?
- they produce lot of smoke
- they have low ignition temperature
- they are high in production cost
- they cannot be easily transported
Q3 | In what forms are liquid fuels available in nature?
- light distillate
- petroleum spirit
- petroleum naphtha
- crude petroleum
Q4 | Name the process used to eliminate impurities present in crude oil?
- distillation
- filtration
- sedimentation
- coagulation
Q5 | Which fuel has the lightest liquid petroleum fraction?
- diesel
- petrol
- distillate
- kerosene
Q6 | Which fuel is heavier than petrol but less volatile and it is commonly used as domestic fuel?
- diesel
- distilled fuel
- kerosene
- alcohol
Q7 | Which fuel is slightly heavier than kerosene and is produced in petroleum fractions?
- diesel
- crude oil
- gasoline
- distillate
Q8 | Which fuel has higher thermodynamic efficiency in liquid fuels?
- diesel
- petrol
- kerosene
- lpg
Q9 | Which liquid fuel has a wider composition than diesel and used in furnaces of oil fired boiler?
- fuel oil
- petrol
- distillate
- alcohol
Q10 | Which is the artificial liquid fuel obtained by fermentation process?
- fuel oil
- alcohol
- distillate
- kerosene
Q11 | Which among the following fuels need excess amount of air for complete combustion?
- natural fuels
- liquid fuels
- gaseous fuels
- artificial solid fuels
Q12 | Which of the following is not a type of steam turbine?
- impulse turbine
- reaction turbine
- pelton wheel turbine
- axial flow type turbine
Q13 | Which statement about impulse turbine is true?
- steam expands over blades
- steam expends completely in stationary nozzels
- steam expends partially over nozzle and turbine blades
- steam expends over blades incompletely
Q14 | Majority of the turbines are axial flow type.
- true
- false
Q15 | Which turbines are employed for driving alternator at synchronous speed?
- central station turbine
- reheating turbine
- extraction turbine
- extraction induction turbine
Q16 | In velocity compounding the steam is expanded from the boiler pressure to condenser pressure in one set of stationary blades on nozzle.
- true
- false
Q17 | Non Condensing steam turbine can also be called as
- extraction steam turbine
- back pressure steam turbine
- impulse steam turbine
- none of the mentioned
Q18 | Steam turbine is classified on basis of
- type of blades
- exhausting condition
- type of steam flow
- all of the mentioned
Q19 | High pressure turbine is a Non-Condensing turbine due to
- exhaust conditions
- axial flow of the steam
- pressure-velocity compounding
- velocity compounding
Q20 | Impulse blades are in the shape of
- rain drop
- circular
- half moon
- none of the mentioned
Q21 | Astern turbines are used in
- power generation
- marine purposes
- aircraft
- none of the mentioned
Q22 | In condensing turbines vacuum is obtained by
- sudden pressure drop
- removal of non condensable gases
- sudden drop in pressure and by removal of non condensable gases
- none of the mentioned
Q23 | Cross compound steam turbines are once used in
- generation of electricity
- marine ships
- automobiles
- none of the mentioned
Q24 | When steam reaches turbine blades the type of force responsible for moving turbine blades are
- axial force
- shear force
- longitudinal force
- none of the mentioned
Q25 | Reaction turbine works with the force obtained from change in pressure energy.
- true
- false