Related Questions

Ceramic recuperators compared to metallic recuperators for the same duty
A Are lighter
B Occupy more space
C Are less costly
D Have higher pressure differential between flue gas & air side
Ceramic nuclear metals compared to solid nuclear metals have
A higher melting points
B low strength at high temperature
C more chances of radiation damage
D poorer corrosion resistance
A metallic alloy in general as compared to their pure metal components is
A More corrosion resistant
B Having higher melting point
C Having lower hardness, reactivity and fusibility
D Having lower electrical conductivity
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
A Ceramic capacitor
B Mica capacitor
C Both will have identical value of capacitance
D It depends on applied voltage
Which of the following ceramic packing materials is the costliest of all?
A Berl saddles
B Raschig rings
C Pall rings
D Intalox saddles
Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of
A Graphite powder
B Thoria
C Zircon powder
D Beryllium
Which of the following is not used as the ceramic material in 'cermets'?
A Silicides
B Oxides
C Carbides
D Nitrides
Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of
A Fireclay
B Silicon carbide
C Corrundum
D Siliceous fireclay
Ceramic cutting tools are
A Made by cold pressing of aluminium oxide powder
B Available in the form of tips
C Brittle and have low bending strength
D All of these
Ceramic tools are fixed to tool body by
A Soldering
B Brazing
C Welding
D Clamping

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