A fast breeder reactor__________________?
(A) uses graphite rods as moderator
(B) has powerful moderator
(C) has no moderator
(D) uses ferrite material as moderator
(D) uses pressurised water as moderator
A fast breeder reactor uses following as fuel_________________?
(A) enriched uranium
(B) plutonium
(C) thorium
(D) U235
(D) natrual uranium
Artificial radioactive isotopes find application in________________?
(A) power generation
(B) nucleonic devices
(C) nuclear fission
(D) nuclear fusion
(D) medical field
Heat transfer in liquid and gases takes place by_____________________?
(A) conduction
(B) convection
(C) radiation
(D) conduction and convection
(D) convection and radiation
When heat is Transferred by molecular collision, it is referred to as heat transfer by __________________?
(A) conduction
(B) convection
(C) radiation
(D) scattering
(D) convection and radiation
Sensible heat is the heat required to __________________?
(A) change vapour into liquid
(B) change liquid into vapour
(C) increase the temperature of a liquid of vapour
(D) convert water into steam and superheat it
(D) convert saturated steam into dry steam
Thermal conductivity of solid metals with rise in temperature normally___________________?
(A) increases
(B) decreases
(C) remains constant
(D) may increase or decrease depending on temperature
(D) unpredictable
When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by ___________________?
(A) conduction
(B) convection
(C) radiation
(D) conduction and convection
(D) convection and radiation
Unit of thermal conductivity in M.K.S. units is ___________________?
(A) kcal/kg m2 °C
(B) kcal-m/hr m2 °C
(C) kcal/hr m2 °C
(D) kcal-m/hr °C
(D) kcal-m/m2 °C
Thermal conductivity of non-metallic amorphous solids with decrease in temperature __________________?
(A) increases
(B) decreases
(C) remains constant
(D) may increase or decrease depending on temperature
(D) unpredictable