Q.1
Thermal conductivity measurement is used for the determination of
Q.2
Instrumentation in a plant offers the advantage of
Q.3
Liquid column manometers are used for measuring the pressure __________ kgf/cm² .
Q.4
Pressure of 0.01 psi (absolute) can be measured by __________ gauge.
Q.5
Dome temperature of blast furnace stove is most accurately measured by a
Q.6
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'.
Q.7
Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is
Q.8
Which of the following controllers has the least maximum deviation?
Q.9
__________ controller has the maximum stabilising time.
Q.10
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer
Q.11
Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by
Q.12
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is
Q.13
Phase lag of the frequency response of a second order system to a sinusoidal forcing function
Q.14
Silver point temperature is __________ °C.
Q.15
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is
Q.16
Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.
Q.17
Select the correct statement from the following.
Q.18
Humidity of air can be determined by a
Q.19
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.
Q.20
Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an
Q.21
An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall. This is the working principle of a
Q.22
The open loop transfer function of a control system is KR/(1 + TS) . This represents
Q.23
Which of the following is not classified as a thermo electric pyrometer?
Q.24
The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.
Q.25
Change of angle of refraction with composition comprises the working principle of a
Q.26
Identify an unbounded input from inputs whose transfer functions are given below
Q.27
Alphatron measures pressure __________ microns.
Q.28
A system with transfer function (2S/4S) + 1 is of __________ order.
Q.29
Routh test
Q.30
Measurement of pressure in ammonia reactor is done by
Q.31
Response of a linear control system for a change in set point is called
Q.32
A negative gain margin expressed in decibels means a/an __________ system.
Q.33
__________ are analysed using a polarograph.
Q.34
A simple pitot tube measures the
Q.35
Flow rate of sludge is not measured by a/an
Q.36
__________ is undesirable in thermocouples used in industries,
Q.37
The fluid used in hydraulic controller is
Q.38
Liquid discharge from a tank or reservoir can not be measured by
Q.39
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.
Q.40
What is the dynamic error in a critically damped second order instrument for a ramp input (AT)?
Q.41
Radiation pyrometers as compared to thermocouples
Q.42
Liquid levels in autocalves are measued by
Q.43
An amplitude ratio of 0.1 corresponds to __________ decibels.
Q.44
The __________ of a vapor pressure thermometer is a primary element.
Q.45
Polarisation of light forms the working principle of a
Q.46
Thermal conductivity measurement com-prises the working principle of a
Q.47
Which of the following is a desirable characteristic of an instrument?
Q.48
__________ is the static characteristics of an instrument,
Q.49
Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are
Q.50
The temperature range for which copper resistance thermometer can be used is __________ °C
0 h : 0 m : 1 s