A. form lumps or masses of coke
B. burn freely
C. show little or no fusing action
D. burn completely
E. do not form ash
Correct Answer: form lumps or masses of coke ✔
Last Updated: May 18, 2023
Related MCQs
- Which is not correct statement about effect of sulphur in fuel __________?
- Which is not the correct statement about moisture in coal __________?
- Which is not correct statement about the function of furnace__________?
- Which is not correct statement about pulverised fuel firing ?
- Pick up wrong statement about desired properties of a good fuel__________?
- Thermal efficiency of a thermal power plant is of the order of__________?
- The radius of a dished head is taken approximately as__________?
- The overall efficiency of thermal power plant is__________?
- In forced circulation type boiler__________?
- The heat loss in a boiler takes place in the form of__________?
- In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine__________?
- With increase in load, convection superheater has__________?
- In a recuperative air preheater, the heat is transferred__________?
- The temperature of flue gases at air heater outlet should be__________?
- In designing air preheater, the important design consideration is that__________?
- The function of injector used in small capacity boilers is to__________?
- The height of chimney in a power plant is governed by__________?
- Vacuum for reciprocating steam engines compared to steam turbines is__________?
- In locomotives, the draught is produced by__________?
- The maximum discharge through a chimney occurs when the height of chimney is__________?
- Which device is used in thermal power plants to reduce level of pollution__________?
- Ultimate analysis of fuel is determination of percentage of__________?
- Spontaneous combustion is a phenomenon in which__________?
- An economiser in a boiler__________?
- Sulphur content of fuels is very important to the plant operators because it__________?
- Gusset stays in a boiler are provided to__________?
- Pour point of fuel oil is the__________?
- The behaviour of coal in a furnace is determained by__________?
- Sulphur in coal results in__________?
- Green coal, in order to be burnt, must be__________?
- The proximate analysis of fuel lists__________?
- The safety valve on boiler drum compared to safety valve on super heater is set at __________?
- The three “Ts” for good combustion are__________?
- Gardually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of__________?
- The capacity of induced draft fan compared to forced draft fan in a boiler is__________?
- Feed water conditioning in thermal power plants in done to__________?
- Boiler parameters are expressed by __________?
- Calorific value of coal is of the order of __________?
- The condition of steam in boiler drum is always __________?
- In ordetjo obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will __________?
- Overfire burning is the phenomenon of __________?
- Deaeration of feed water is carried out because it reduces __________?
- Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler __________?
- During storage, the heating value of coal __________?
- Film boling occurs at __________?
- For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has __________?
- The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase __________?
- The basic job of feed water treatment in boilers is to overcome the problem of __________?
- The feed check valve is used in order to __________?
- In water wall furnace, the heat is transferred to the water-walls by __________?
- Fire tube boilers are limited to a maximum design working pressure of __________?