Q.1.

In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Q.2.

With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer

Q.3.

A magnetic flowmeter is

Q.4.

Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.

Q.5.

Which of the following can measure temperatures in the range of -to 300°C ?

Q.6.

A manometer measures the __________ pressure.

Q.7.

Phase lag of the sinusoidal response of a first order system is

Q.8.

Continuous measurement of moisture content of paper in paper industry is done by measuring the

Q.9.

Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury.

Q.10.

Phase margin is equal to

Q.11.

Platinum resistance thermometer is the international standard for temperature measurement between

Q.12.

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.13.

Stroboscope is used for the measurement of

Q.14.

The pressure sensing element of elastic type pressure gauge is never made in the form of a

Q.15.

Strain gage pressure transducers are used to measure __________ pressures.

Q.16.

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.17.

Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

Q.18.

Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.

Q.19.

Mcleoid gauge is used to measure the

Q.20.

Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

Q.21.

Which of the following thermocouples has the least temperature measurement range?

Q.22.

In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Q.23.

Mcleoid gauge is used to measure the

Q.24.

Which of the following can measure temperatures in the range of -to 300°C ?

Q.25.

The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function will have a definite num-ber of loci for variation of K from 0 to ∞. The number of loci is

Q.26.

Pick out the symbol for "locally mounted instrument" in instrumentation diagram.

Q.27.

In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Q.28.

The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function will have a definite num-ber of loci for variation of K from 0 to ∞. The number of loci is

Q.29.

The transfer function for a PID controller is (where, τ i is the integral (reset) time and τD is the derivative time.)

Q.30.

Which of the following is a desirable characteristic of an instrument ?

Q.31.

Compositional analysis of __________ is done using mass spectrometer.

Q.32.

Pick out the wrong statement.

Q.33.

The operation of a rotameter is based on

Q.34.

The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.

Q.35.

The function of a transducer is to

Q.36.

Nichol's chart deals with

Q.37.

The __________ of a vapor pressure thermometer is a functioning element.

Q.38.

Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Q.39.

Instrumentation in a plant offers the advantage of

Q.40.

Which of the following filled system expansion thermometer has the capability to measure the lowest temperature ?

Q.41.

Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?

Q.42.

Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a

Q.43.

A sinusoidal variation in the input passing through a linear first order system

Q.44.

Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.

Q.45.

Radiation pyrometers as compared to thermocouples

Q.46.

A negative gain margin expressed in decibels means a/an __________ system.

Q.47.

Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

Q.48.

Pick out the first order system from among the following.

Q.49.

Thermocouple in a thermal well behaves as a true

Q.50.

The response of two tanks of same size and resistance in series is