Wavelength of radiation emitted by a body depends on the ________________ of its surface?
A. Temperature
B. Area
C. Nature
D. All ‘A’, ‘B’ & ‘C’
Chemical Engineering Basics
Which of the following metals is the most prone to work hardening ?
Which of the following metals is the most prone to work hardening ?
A. Brass
B. Aluminium
C. Copper
D. Lead
A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?
A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?
A. 0
B. 0.33
C. 0.44
D. 0.25
Working of linear variable differential transducer (LVDT) is based on the principle of variable_____________________?
Working of linear variable differential transducer (LVDT) is based on the principle of variable_____________________?
A. Capacitance
B. Resistance
C. Mutual inductance
D. None of these
The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?
The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?
A. Pressure
B. Density
C. Force
D. None of these
A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?
A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?
A. Steel
B. Glass
C. Rubber
D. Brass
The expected efficiency of a single riveted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased ___________________ times ?
The expected efficiency of a single riveted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased ___________________ times ?
A. Two
B. Four
C. Six
D. Eight
In TIG welding, thoriated tungsten electrodes are used, because it ____________________?
In TIG welding, thoriated tungsten electrodes are used, because it ____________________?
A. Has higher current carrying capacity
B. Has better electron emissivity
C. Is stronger than ordinary tungsten
D. Is easy to prepare
In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?
In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?
A. Zirconia
B. Alumina
C. Bakelite
D. Tungsten carbide
For separating small pieces of metal from engine oil of a car, the best separating technique is the _____________________ ?
For separating small pieces of metal from engine oil of a car, the best separating technique is the _____________________ ?
A. Chromatography
B. Evaporation
C. Filtration
D. Fractional distillation