Users Also Read
Read MCQ's/Objective questions
MCQ's Search Engine
Chemical Engineering Basics
Chemical Engineering Plant Economic
Chemical Engineering Thermodynamic
Chemical Process Industries
Chemical Reaction Engineering & reactor design
Environmental Engineering
Fertiliser Technology
Fluid Mechanics
Fuels and Combustion
Heat Transfer
Mass Transfer
Materials and Construction
Mechanical Operations
Nuclear Power Engineering
Petroleum Refinery Engineering
Polymer Technology
Process Control and Instrumentation
Process Equipment and Plant Design
Refractory Technology
Stoichiometry
Home⇒ Engineering⇒
Furnace technology
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ Scaling of furnace stock is reduced by __________ in flue gas. all (a), (b) & (c) [other wrong options] [Discuss in forum] CO H2 high CO/CO2 |
Q22 ⇒ Furnace pressure is normally controlled by regulating the damper [other wrong options] [Discuss in forum] air pressure fuel gas pressure speed of I.D. fan |
Q23 ⇒ Shaft furnaces are used for all (a), (b) and (c) [other wrong options] [Discuss in forum] smelting calcining roasting |
Q24 ⇒ While the fuel fired furnace can be used upto a maximum temperature of about 1700°C, the electric furnace can be used upto a temperature of about __________ °C. 4500 [other wrong options] [Discuss in forum] 2000 3000 6000 |
Q25 ⇒ The function of an economiser in a boiler is to preheat the feedwater [other wrong options] [Discuss in forum] combustion air pulverised coal furnace oil |
Q26 ⇒ Which is not accomplished in an underfired furnace ? Increase in heating capacity/m2 of floor space. [other wrong options] [Discuss in forum] Elimination of cold spot at the bottom of the charge. Reduction in the temperature of furnace gases. Portection of the periphery of the charge from excessive radiation. |
Q27 ⇒ Neutral atmosphere is maintained in a/an __________ furnace. cold rolled steel coil annealing [other wrong options] [Discuss in forum] open hearth soaking pit walking beam reheating |
Q28 ⇒ The rate of scaling of furnace stock depends upon the all (a), (b) and (c) [other wrong options] [Discuss in forum] temperature time nature of atmosphere |
Q29 ⇒ Thermal efficiency of an open hearth furnace may be about __________ percent. 20 [other wrong options] [Discuss in forum] 5 50 80 |
Q30 ⇒ Calcination of limestone to produce lime is done in a __________ kiln. both (b) and (c) [other wrong options] [Discuss in forum] tunnel rotary vertical shaft |
Q31 ⇒ Soaking pits are meant for heating steel ingots [other wrong options] [Discuss in forum] coils sheets slabs |
Q32 ⇒ Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of zircon powder [other wrong options] [Discuss in forum] graphite powder thoria beryllium |
Q33 ⇒ Which of the following is not a directly fired furnace ? By-product coke oven [other wrong options] [Discuss in forum] Calcination kiln Sintering furnace Open hearth furnace |
Q34 ⇒ Means for giving direction to the circulation of gases in furnaces are all (a), (b) and (c). [other wrong options] [Discuss in forum] fans. arrangement of heating stock in the furnaces. location of outlet ports and heating & combustion devices. |
Q35 ⇒ The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace. high frequency induction [other wrong options] [Discuss in forum] arc resistance low frequency induction |
Q36 ⇒ Regenerators compared to the recuperators for the same duty occupy more space [other wrong options] [Discuss in forum] are less costly are of smaller size all (a), (b) and (c) |
Q37 ⇒ The method of Lobo and Evans is concerned with the calculation of the heat absorption in radiant section of a furnace. [other wrong options] [Discuss in forum] heat transfer by forced convection in a reboiler. heat transfer in vacuum condensers. mass transfer co-efficient. |
Q38 ⇒ __________ furnace is not an electric furnace. Pot [other wrong options] [Discuss in forum] Arc Induction Resistance. |
Q39 ⇒ An example of indirectly heated furnace is the muffle furnace [other wrong options] [Discuss in forum] soaking pit reheating furnace none of these |
Q40 ⇒ Hearth furnaces are not used for none of these [other wrong options] [Discuss in forum] roasting melting reheating |
Or |