Q.1
__________ type of element is normally not used in the bimetallic thermometers.
Q.2
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?
Q.3
Nichol's chart deals with
Q.4
Dilatometer is used to measure
Q.5
In an exothermic chemical reactor, the manipulated variable is the flow rate of
Q.6
Which of the following shows maximum dip effect (indicating reverse direction of temperature change)?
Q.7
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a
Q.8
Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³.
Q.9
Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere?
Q.10
Thermal wells used in temperature measurements should have
Q.11
Process degree of freedom indicates __________ number of controllers to be used.
Q.12
Which of the following can measure temperatures in the range of - 20 to 300°C ?
Q.13
Paramagnetism method is not used for the composition determination of __________ in gases.
Q.14
Phase lag of the sinusoidal response of a first order system is
Q.15
The unit step response of the transfer function 1/(s² + 2s + 3)
Q.16
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
Q.17
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.
Q.18
Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is
Q.19
Bimetal strips are not used in
Q.20
A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is
Q.21
The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since
Q.22
Hot wire anemometer is used for the measurement of
Q.23
Stroboscope is used for the measurement of
Q.24
The transfer function for a P-D controller is
Q.25
The thermal emf-temperature relationship of most thermocouples is
Q.26
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.
Q.27
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an
Q.28
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.
Q.29
The transfer function of a first order system is
Q.30
The pressure sensing element of elastic type pressure gauge is never made in the form of a
Q.31
Gas chromatography is used for the measurement of
Q.32
The frequency at which maximum amplitude ratio is attained is called the __________ frequency.
Q.33
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?
Q.34
The time constant of a first order process with resistance R and capacitance C is
Q.35
Which of the following thermometers is not suitable for distant reading upto 60 metres?
Q.36
Presence of a small amount of water in the organic systems can be determined by the __________ method.
Q.37
Which of the following is a 'contact' pyrometer?
Q.38
The operation of a rotameter is based on
Q.39
Response of a system to a sinusoidal input is called __________ response.
Q.40
Mercury manometer (U-tube type) exemplifies a __________ order system.
Q.41
The term analogous to voltage in a single tank system is the
Q.42
Pirani gauge is used for the measurement of
Q.43
Stalagmometer is used for the measurement of
Q.44
Working principle of disappearing filament type optical pyrometer is based on the
Q.45
Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is
Q.46
If response of a control system is to be free of offset and oscillation, the most suitable controller is
Q.47
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing
Q.48
The transfer function of a pure dead time system with dead time τd is
Q.49
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.
Q.50
Which is the most suitable instrument for measuring pressure below 3 microns?
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