You Are On Multi Choice Question Bank SET 472
23601. Typical specifications for design stipulates the gain margin and phase margin to be respectively
23602. Working principle of radiation pyrometer is based on the
23603. Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?
23604. Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.
23605. In a single tank system, the transfer function of level to inlet flow rate is
23606. Which of the following is a desirable characteristic of an instrument ?
23607. The operation of a rotameter is based on
23608. The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.
23609. Instrumentation in a plant offers the advantage of
23610. Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?
23611. Thermal conductivity measurement com-prises the working principle of a
23612. Response of a system to a sinusoidal input is called __________ response.
23613. The closed loop pole of a stable second order system could be
23614. Smoke density of the flue gas going out of the chimney is measured by a
23615. Transfer function of transportation lag is
23616. Temperature measuring instruments are standardised mostly with __________ points of pure substances.
23617. Pick out the first order system from among the following.
23618. The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.
23619. Which of the following controllers has the least maximum deviation ?
23620. Volumetric expansion is the working principle of the __________ thermometers.
23621. Which of the following measurements can be made by the measurement of emf ?
23622. A magnetic flowmeter is
23623. Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.
23624. Strain gage pressure transducers are used to measure __________ pressures.
23625. Compositional analysis of __________ is done using mass spectrometer.
23626. The function of a transducer is to
23627. Nichol's chart deals with
23628. Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?
23629. A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if
23630. __________ is undesirable in thermocouples used in industries,
23631. Select the correct statement from the following.
23632. For an input forcing function, X(t) = 2t2, the Laplace transform of this function is
23633. Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a
23634. The __________ of a vapor pressure thermometer is a secondary element.
23635. Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is
23636. Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit?
23637. The second order system with the transfer function has a damping ratio of
23638. In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable.
23639. A non-linear chemical system is exemplified by a/an
23640. The transfer function for an ideal proportional plus reset controller (reset time T) is
23641. The frequency response of a first order system, has a phase shift with lower and upper bounds given by
23642. Gas chromatography is used for the measurement of
23643. Which of the following thermocouples can measure the maximum temperature ?
23644. Radiation pyrometers as compared to thermocouples
23645. Liquid flow rate in a small channel is best measured by a/an
23646. Specific gravity of a liquid can not be measured by a/an
23647. __________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'.
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23648. Dead zone is the
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