Measurement of sub-zero Celcius temperature in industry is done most commonly by

Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?

__________ is undesirable in thermocouples used in industries,

Concentration of sugar solution can be determined by the

A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if

Identify an unbounded input from inputs whose transfer functions are given below

Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.

Configuration of Bourdon spring tube is never made of __________ shape.

Liquid flow rate in a small channel is best measured by a/an

Measurement of pressure in ammonia reactor is done by

Which of the following controllers has maximum offset ?

Which of the following is not a mechanical pressure sensing element ?

Pirani gauge is used for the measurement of

Flapper nozzle is used in a/an __________ controller.

Time constant is the

The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

The transfer function for a P-D controller is

Use of I-control along with P-control facilitates

Select the correct statement from the following.

In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

"A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency." This is __________ criterion.

Pick out the most suitable instrument for measuring temperature in the range of-to 425°C.

Thermodynamic celcius scale of temperature measurement is

Specific gravity of a liquid can not be measured by a/an

The fluid used in hydraulic controller is

Pressure of 0.psi (absolute) can be measured by __________ gauge.

__________ are analysed using a polarograph.

The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.

The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly

The term analogous to the electrical current in a thermal system is the

Mercury manometer (U-tube type) exemplifies a __________ order system.

Which of the following controllers has the least maximum deviation ?

Bode diagram is a plot of

The amplitude ratio for the sinusoidal response of __________ is < 1.

Turbine flow meters are suitable for

Mass spectrometer is used for the composition analysis of

Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by

A system with a double pole at the origin is unstable since the corresponding term in the time domain

For an input forcing function, X(t) = 2t², the Laplace transform of this function is

A typical example of a physical system with under damped characteristic is a

Which of the following can not measure a temperature of 1600°C ?

Composition of alloys can be determined by

Optical activity of a solution can be determined using a

Feed forward controller accounts for the __________ changes.

Radiation thermometer can not measure the temperature

Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the

According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is

__________ temperature scale assignsto the 'ice point' andto the 'steam point'.

Flow rate of a river is measured by a/an

High temperature of around 2000°C of incandescent gas mantles is measured by a/an