Related Questions

Enriched uranium may contain fissionable contents of the order of
A 1-99%
B 1-25%
C 1-50%
D 1-75%
In the breeder reactors the generation of new fissionable atom is
A At the lower rate than the consumption
B At a higher rate than the consumption
C At an equal rate of the consumption
D Depends on other considerations
The critical mass of a fissionable material can be reduced by
A Heating it
B Cooling it
C Surrounding it by neutron reflecting material
D Surrounding it by neutron absorbing material
Thermoplastic materials are those materials which
A Do not become hard with the application of heat and pressure and no chemical change occurs
B Are flexible and can withstand considerable wear under suitable conditions
C Are formed into shape under heat and pressure and results in a permanently hard product
D Are used as a friction lining for clutches and brakes
In drilling softer materials, the cutting speed is ___________ as compared to harder materials.
A Same
B Low
C High
D None of these
Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such materials are called
A Piezo-electric
B Photo-electric
C Thermo-electric
D Photo-resistive
Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials.
A circular
B triangular
C rectangular
D none of the above
The inventory of raw materials included in the working capital is usually about __________ months supply of raw materials valued at delivery prices.
A One
B Three
C Six
D Twelve
In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are
A Equal
B Proportional to their respective moduli of elasticity
C Inversely proportional to their moduli of elasticity
D Average of the sum of moduli of elasticity
The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.
A 768
B 1127
C 1359
D 1480

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