Description : Compare RTD and thermistor on the basis of temperature coefficient , linearity, temperature range and cost.
Last Answer : Parameters RTD Thermistors Temperature coefficient It has positive temperature Coefficient (PTC) of Resistance. It has both positive and negative temperature Coefficient (PTC and NTC) of Resistance. ... -270oC to 2800oC -150oC to 300oC Cost High cost Low cost
Description : Which sensor shown in the illustration develops its own conditioning and point setting and 'reports' directly to the 'annunciator'? EL-0094 A. Transducer B. Resistance Temperature Detector (RTD) C. Pressure Switch D. Thermocouple
Last Answer : Answer: C
Description : A temperature instrumentation system for an engine room console consists of a resistance temperature detector (RTD), a measuring bridge circuit, and a meter (or alarm circuit).Which of the following ... is zero. D. The input voltage of the resistance bridge is the constant temperature signal.
Description : What is resistance temperature detector (RTD) and mention some examples?
Last Answer : Resistance temperature detector is an instrument, which is used to measure temperature. This uses the property that the resistance of a metal changes (increases of decreases) with temperature. This ... calibrated to measure temperature. Different types of RTD's are Platinum, copper, nickel.
Description : Describe construction and working of Resistance Temperature Detector (RTD).
Last Answer : RTD: Construction and working: Resistance thermometer bulbs consist of a coil of fine wire wound or in a frame of insulating material. The resistance wire itself must be homogeneous in order to ... surrounding it. Thus RTD is used to measure temperature in terms of change in resistance.
Description : Draw and explain temperature measurement using RTD. State its advantages and disadvantages.
Last Answer : https://youtu.be/rYcglFW4y0I
Description : What type of temperature coefficient do thermistors have? (1) Positive (2) Negative (3) Either positive or negative (4) None of these
Last Answer : Either positive or negative type of temperature coefficient do thermistors have.
Description : Which of the following is a negative-resistance microwave device for oscillator applications? A) IMPATT Diode B) Gunn Diode C) Snap diode D) Schottky Diode
Last Answer : Which of the following is a negative-resistance microwave device for oscillator applications? A) IMPATT Diode B) Gunn Diode C) Snap diode D) Schottky Diode
Description : The sensor connected to 'signal conditioner' (6000F125) shown in the illustration is a/an ______________. EL-0094 A. thermocouple B. transducer C. inverter D. RTD
Last Answer : Answer: B
Description : The sensor connected to 'signal conditioner' (6000AH170) shown in the illustration is a/an _____________. EL-0094 A. thermocouple B. transducer C. inverter D. RTD
Last Answer : Answer: A
Description : The sensor connected to 'signal conditioner' (6000F085) shown in the illustration is a/an ______________. EL-0094 A. thermocouple B. transducer C. inverter D. RTD
Last Answer : Answer: D
Description : Give construction working principle of RTD with a neat sketch.
Last Answer : Diagram Working: An RTD (resistance temperature detector) is a temperature sensor that operates on the measurement principle that a material's electrical resistance changes with temperature. ... change m resistance of the RTD, which is then used to calculate change in temperature.
Description : Describe the importance of three wire and four wire configuration for RTD with suitable circuit diagram.
Last Answer : Three wire RTD: Four wire RTD: Three wire configurations is used to help the circuit compensate for lead wire resistance, and thus provide a truer indication of the measured ... the leads. To get the optimum performance, it is generally best to specify the RTD configuration.
Description : Compare RTD and Thermistor
Last Answer : RTD Thermistor Made of metals which are good conductors of electricity e.g. copper, platinum Nickel Made of metallic oxides such as cobalt, manganese, nickel etc. Positive temperature coefficient ... small in size. Cost is high They are not costlier as compared to RTD
Description : When temperature rises, resistance of negative temperature coefficient thermistor A. increases B. decreases C. zero D. infinity
Last Answer : decreases
Description : Define the term negative temperature coefficient.
Last Answer : It is the decrease in a semiconductor’s resistance as temperature rises.
Description : Thermistor with high negative temperature coefficient are very accurate for measuring low temperature especially near is a. 10 K b. 70K c. 200K d. 35K
Last Answer : c. 200K
Description : Semi-conductors have ________ temperature coefficient of resistance. (A) Negative (B) Positive (C) Both positive and negative (D) None of the above
Last Answer : (A) Negative
Description : Which of the following has negative temperature coefficient? A. Brass B. Mercury C. Electrolytes D. Silver.
Last Answer : Electrolytes has negative temperature coefficient.
Description : Which amongst the following has a negative coefficient of temperature for resistance? a) Copper b) Lead c) Carbon d) Aluminium
Last Answer : Which amongst the following has a negative coefficient of temperature for resistance? Carbon
Description : A semiconductor device made out of a material having very high temperature coefficient of resistance is
Last Answer : A semiconductor device made out of a material having very high temperature coefficient of resistance is Thermistor
Description : The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils? (1) 3.54 mH (2) 7.88 mH (3) 39.9 mH (4) 189.3 mH
Last Answer : The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. 39.9 mH is the mutual inductance between the coils.
Description : Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is
Last Answer : Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is 0.5 mH.
Description : Is it possible for a coefficient of variation to be negative Explain.?
Last Answer : Of course it is! If the mean of a set of data is negative, thenthe coefficient of variation will be negative.
Description : . Non-negativity condition in an LP model implies a. A positive coefficient of variables in objective function b. A positive coefficient of variables in any constraint c. Non-negative value of resources d. None of the above
Last Answer : d. None of the Above
Description : The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a ... )R = 1.5; (COP)HP = 2.5 (D) (COP)R = (COP)HP = 2.5
Last Answer : (C) (COP)R = 1.5; (COP)HP = 2.5
Description : When V-belt drive is used a safety device, its performance is affected by a) Variation in belt tention b) Increase in coefficient of friction as belt slippage increase c) Both (a) and (b) d) None of the above
Last Answer : c) Both (a) and (b)
Description : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Last Answer : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Description : Negative feedback in amplifier: (1) Improves the SNR at input (2) Improve SNR at output (3) Reduces distortion (4) Decreases bandwidth
Last Answer : Negative feedback in amplifier: Reduces distortion.
Last Answer : Negative feed back reduces Distortion in amplifiers
Last Answer : Negative feedback is used in audio amplifiers to Reduce distortion.
Description : Which side of a capacitor is negative?
Last Answer : In electrolytic type negative is shorter lead and usually mark in the tank. But of course not applicable to non-polar.
Description : Which of the following device is used for coupling microwave energy? A) Resonator B) Waveguide C) Loop D) Antenna
Last Answer : A
Description : The device used for voltage regulator is
Last Answer : The device used for voltage regulator is zener diode
Description : A snubber circuit is connected to the power semiconductor device to reduce the (A) turn-on time (B) turn-off time (C) electrical stresses (D) thermal resistance
Last Answer : A snubber circuit is connected to the power semiconductor device to reduce the electrical stresses
Description : Which of the following is a Read Only Memory storage device? A. Floppy Disc B. Hard Disc C. CD ROM D. None of these
Last Answer : Which of the following is a Read Only Memory storage device? CD ROM
Description : PLAs, CPLDs, and FPGAs are all which type of device? (1) SLD (2) PLD (3) EPROM (4) SRAM
Last Answer : PLAs, CPLDs, and FPGAs are all PLD type of device.
Description : In a strain measuring device, using a strain gauge, the output quantity is A) Voltage B) resistance C) Impedance D) either A) or B)
Last Answer : In a strain measuring device, using a strain gauge, the output quantity is Voltage
Last Answer : A FET is essentially a Voltage driven device
Description : Why BJT is a current control device?
Last Answer : BJT have three terminal emitter, base and collector. The collector current is the output current. The collector current (Ic) is controlled by base current hence BJT is called current controlled device.
Last Answer : In BJT there is movement of electrons and holes accros the junctions which is basicaly current flow.
Last Answer : No, BJT is a current controlled device .
Description : which device converts sound to electricity ?
Last Answer : Microphone converts sound to electricity.
Description : What is programmable logic device?
Last Answer : Programmable Logic Devices (PLD) PLD chips can be erased electrically and program to implement different logic function. Designing with PLD chips is faster which ... Logic (GAL). FPGA and CLPD are the types of advanced PLDs.
Description : Which of the following statement(s) is/are true concerning septic shock? a. The clinical picture of gram negative septic shock is specifically different than shock associated with ... mechanisms of intrinsic expansion of the circulating blood volume, exogenous volume resuscitation is necessary
Last Answer : Answer: d The clinical findings in sepsis and septic shock represent the host response to infection. Gram-positive and gram-negative bacteria, viruses, fungi, rickettsiae, and ... intravascular volume, exogenous volume resuscitation must be provided to restore venous return and ventricular filling
Description : Increasing evidence has implicated gram-negative bacterial lipopolysaccharide (LPS endotoxin) as the portion of the gram-negative bacterial cell membrane responsible for many, if not all the ... host, exerting deleterious effects on the host when excessive amounts reach the systemic circulation
Last Answer : Answer: a, b, d The LPS molecule exerts diverse effects on the mammalian host. Immunologic responses to LPS include nonspecific polyclonal B-cell proliferation, macrophage activation and ... deleterious effects on the host only after large amounts are secreted and reach the systemic circulation
Description : What is the cheapest HDPVR (or similar device)?
Last Answer : Amazon is a good place to start.
Description : Which device similar to mouse?
Last Answer : A track ball does the same job as a mouse.
Description : The relaxation techniques of progressive muscle relaxation, relaxation with guided imagery, and the Benson Relaxation Response share which of the following elements? a) A mental device (something on which ... required to assist an individual to learn techniques to reduce one's response to stress.
Last Answer : a) A mental device (something on which to focus the attention) Similar elements also include a quiet environment, a comfortable position, and a passive attitude.
Description : The TRIAC is similar in operation to what device?
Last Answer : SCR