Pulp & Paper MCQ
Test your knowledge with important Pulp & Paper MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Pulp & Paper MCQs on Bissoy. Bissoy App
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The temperature of a heated metal filament depends on the gas pressure since the gas molecules could conduct heat from the filament.
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Strain ___________ could be mounted on diaphragms to measure pressure; this method has been miniaturized onto integrated circuits.
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If a fluid is at rest, one refers to static _________ If a fluid is in motion, one refers to dynamic _________ which is a function of the motion of the fluid.
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The __________ factor is the relative change in resistance divided by relative change in length i.e., the definition of strain.
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__________ could be utilized as a point sensor by measuring a time pulse of __________ takes to echo back to the transmitter. It is similar in principle to a radar.
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__________ sensors is a type of transformer and are the basis of the prevalent L.V.D.T . The signal is easily conditioned to give out a D.C. voltage that in linearly proportional to point over part of the range of motion of the core.
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Variable inductance is achieved by the utilization of __________ core in the shape of a rod which is wraped by a hollow coil of wire.
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A potentiometric displacement sensor utilizes a wire of high resistance with a wiper in electrical contact with the wire.
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__________ sensors rely on a change of capacitance, resistance, inductance, or reluctance.
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__________ sensors are utilised to measure variables such as point, velocity, acceleration, force, press, levels and flow.
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The objective of process control is to keep key process operating parameters within narrow bounds of the ____________
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In pneumatic systems, one common standard calls for a signal output of _________
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Optical _________ is utilized to measure the temperature of objects. This relies on blackbody radiation.
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_________ have been utilized in thermostats for years. They are mechanically connected to a switch, such as a mercury switch, to control heaters.
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Noise reduction techniques should be utilized to avoid interfering voltages that might be otherwise generated in the system.
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Thermocouples consist of a pair of wires made of dissimilar metals joined together at one or more junctions that generate a voltage when subjected to a temperature gradient . This phenomenon is known as the _________
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The _________ of semiconductors is also a function of temperature, but semiconductor materials could be made whose _________ increment drastically with increment temperature
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While using a meter bridge circuit a long signal difference is conditioned which might contain a compensating line to nullify the effect of long leads to the R.T.D.
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The _________ of metals is a function of temperature and increases with increasing temperature.
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____________ cells produce a voltage and current that are a function of the light level incident to them. These have time constants on the order of 1 to 100 µs.
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__________ utilise a thin band of a material that becomes conductive when exposed to light of a minimum frequency.
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The __________ at one temperature is immersed in a liq. of a different temperature, the output of the __ would change with time until it finally gives a reading that is around its normal error.
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The __________ of a sensor is a measure of how the sensor responds to an actual change as a function of time. For example, all thermocouples have mass.
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A transfer function relates the value of the parameter to be measured with the output of the __________
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The __________ is a device which converts a change in a parameter to a change in a electric or pneumatic signal.
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The difference between the actual value and the set point is known as the __________ The controller reads the __________ and makes a decision.
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This is __________ feedback loop because the desired result is determined and the information fed back to the controller for appropriate action. This system is also known as __________ control loop.
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A good example of automatic control is electric heating of a house in a cold environment, a process where a single variable is controlled.
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A __________ for a given process must have at least one sensor, the controller, and a control element to which the results are applied.
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Hydraulic fluid might be transferred with pipes, tubing, or hose. Pipes are often of (non-stainless) ___________ material.