Category: Instrumentation and Process Control Mcqs

A.Stefan-Boltzmann law
B.Ohms law
C.Seebeck effect
D.Curies law

A.increase of electrical resistance with increase in temperature
B.increase in vapour pressure with increase in temperature
C.linear expansion of metal with increase in temperature
D.e.m.f. generated in a single homogeneous wire with increase in temperature

A.increases with increase in temperature
B.decreases with increase in temperature
C.remains constant with change in temperature
D.decreases linearly with increase in temperature

A.polarisation of light
B.change of angle of refraction with composition
C.change of the electrical donductivity of solution with composition
D.change of the electrical conductivity of solution with temperature

A.absorption and evolution of heat at the junctions of a thermocouple to the current flow in the circukt
B.electrical resistance with temperature
C.e.m.f. generated in a single homogeneous wire and the temperature difference

A.Ni (69%) and Cu (28%)
B.Ni (69%) and Cr (31%)
C.Cu (55%) and Sn (45%)
D.Fe (90%) and Cr (10%)

A.absorption and evolution of heat at the junctions of a thermocouple to the current flow in the circuit
B.e.m.f. generated in a single homogeneous wire and the temperature difference
C.electrical resistance with temperature
D.e.m.f. generated in a single homogeneous wire and the temperature difference

A.at every temperature
B.only at the calibrated points
C.at temperature midway between the calibrated points
D.at temperatures near zero kelvin.

A.platinum
B.carbon
C.copper
D.constantan

A.remains unaffected with change in temperature
B.increases with increase in temperature
C.increases linearly with incease in temperature
D.decreases with increase in temperature