Which of the following is a first-order instrument?
A.U-tube type mercury manometer
B.Bimetallic thermometer with covering
C.Vapour pressure thermometer without any covering
D.mercury thermometer with covering.
Category: Instrumentation and Process Control Mcqs
Polarimeter works on the principle of_____________?
A. polarisation of light
B. change of the electrical conductivity of solution with composition
C. change of angle of refraction with composition
D. change of electrical conductivity of solution with temperature
Resistivity is minium for ____________________?
A.Ni
B.Pt
C.Cu
D. Dt
The refractive index of a gas _________________?
A.is inversely proportional to temperature
B.is directly proportional to temperature
C.is independent of temperature
D.varies as the square root of temperature
The e.m.f. generated in thermocouples is of the order of _______________?
A.volts
B.millivolts
C.microvolts
D.kilovolts
Invar is a _______________?
A.iron-nickel alloy containing about 36% nickel
B.copper-nickel alloy containing about 36% nickel
C.zinc-nickel alloy containing about 36% nickel
D.tin-nickel alloy containing about 36% nickel
Specific conductance in micro-mho/cm of a good quality distilled water is _________________?
11A.0.01
B.0.1
C.1
D.10
For platinum thermocouples lead wires are made of _______________________?
A.iron and copper
B.copper and copper-nickel alloy
C.nickel and iron
D.tin and nickel.
Specific conductance in micro-mho/cm of a excellent quality raw water is __________________?
A.100
B.1000
C.10
D.0.01
At room temperature [H+] [OH-] is equal to ________________?
A.10-7 moles/litre
B.10-14 moles/litre
C.10-10 moles/litre
D.10-16 moles/litre
