23801. __________ controller has the maximum stabilising time.
23802. Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the
23803. Stalagmometer is used for the measurement of
23804. The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to
23805. Who among the following is associated with ‘Keezhariyur Bomb case’of 1942?
23806. Liquid levels in autocalves are measued by
23807. E.m.f. generated by thermocouples is of the order of
23808. A pyrheliometer is an instrument used for measuring the
23809. Flow rate through an orifice is __________ the pressure differential.
23810. Who among the following participated in Dandi March of 1930 with Mahatma Gandhi?
23811. __________ is the static characteristics of an instrument,
23812. Phase lag of the frequency response of a second order system to a sinusoidal forcing function
23813. Dead zone in an instrument must be less than __________ percent of the scale.
23814. Emission spectroscopy is used for
23815. Gas analysis is commonly done using the
23816. The open loop transfer function of a control system is . This represents
23817. Thermal conductivity measurement is used for the determination of
23818. Presence of a small amount of water in the organic systems can be determined by the __________ method.
23819. The transfer function of a pure dead time system with dead time τd is
23820. Thermal conductivity cell is the primary element of a/an __________ analyser.
23821. Zirconia probe is used for the measurement of
23822. The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches
23823. __________ type of element is normally not used in the bimetallic thermometers.
23824. Suppose that the gain, time constant and dead time of a process with the following transfer function:Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as
23825. Process degree of freedom indicates __________ number of controllers to be used.
23826. Characteristic equation is the denominator of __________ loop transfer function.
23827. Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.
23828. Polarograph is meant for the analysis of
23829. Which of the following fluid flow measuring devices can measure the largest flow rate ?
23830. Flow rate of sludge is not measured by a/an
23831. In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the __________ variable.
23832. When ice is melt in the bucket of water, then what happens to the level of water?
23833. Polarisation of light forms the working principle of a
23834. A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same
23835. Thermal wells used in temperature measurements should have
23836. Which of the following flow-metering instru-ments is an areameter ?
23837. Out of the following themocouple wire insulating material, the highest temperature rating is for
23838. Which is the most suitable instrument for measuring pressure below 3 microns ?
23839. Routh stability method uses __________ loop transfer function.
23840. Pyrometry refers to the measurement of temperature
23841. Photoelectric pyrometers are suitable in the temperature range of __________ °C.
23842. Non-metallic diaphragm used as pressure sensor in instruments is generally made of
23843. Response of a linear control system for a change in set point is called
23844. Hot wire anemometer is used for the measurement of
23845. Which of the following thermocouples has the widest temperature measurement range ?
23846. 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
23847. Bourdon tube is never made of
23848. "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
23849. Accumulation of which chemical leads to Kidney stones?
23850. Block diagram of a simple standard control system is shown below in the figure.
Which of the following statement about the above control system is wrong ?