What is the principle of heat measurement ?

1 Answer

Answer :

: Heat exchange occurs when multiple objects of different temperatures are exposed to heat. Objects at higher temperatures lose heat and objects at lower temperatures absorb heat. This acceptance or rejection of heat does not depend on the amount of heat , but on their relative temperature. Heat flows from high temperature objects to low temperature objects until the temperature of the objects is equal. According to the formula for energy conservation, objects at higher temperatures absorb the same heat as objects at lower temperatures.

Related questions

Description : The accelerometer is used as a transducer to measure earthquake in Richter scale. Its design is based on the principle that A Its natural frequency is very low in comparison to the frequency ... is equal to the frequency of vibration D Measurement of vibratory motion is without any reference point

Last Answer : C Its natural frequency is equal to the frequency of vibration

Description : The accelerometer is used as a transducer to measure earthquake in Richter scale. Its design is based on the principle that a) its natural frequency is very low in comparison to the frequency ... is equal to the frequency of vibration d) measurement of vibratory motion is without any reference point

Last Answer : c) its natural frequency is equal to the frequency of vibration

Description : The accelerometer is used as a transducer to measure earthquake in Richter scale. Its design is based on the principle that ______. (A) its natural frequency is very low in comparison to the ... is equal to the frequency of vibration (D) measurement of vibratory motion is without any reference poin

Last Answer : (C) its natural frequency is equal to the frequency of vibration

Description : The accelerometer is used as a transducer to measure earthquake in Richter scale. Its design is based on the principle that a) its natural frequency is very low in comparison to the frequency ... is equal to the frequency of vibration d) measurement of vibratory motion is without any reference poin

Last Answer : c) its natural frequency is equal to the frequency of vibration

Description : Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of __________ pressure. (A) Small differential (B) Atmospheric (C) Absolute (D) Gage

Last Answer : (A) Small differential

Description : Operation of McLeod gauge used for low pressure measurement is based on the principle of (A) Gas law (B) Boyle's law (C) Charles law

Last Answer : Answer: Option B

Description : Explain with principle the instrument for air purge method of level measurement.

Last Answer : Air purge method for of level measurement:  Principle: When liquid is held in a tank, then it exerts equal pressure on the walls of the tank. Such a pressure is due to the weight ... the hydrostatic pressure. The gauge then measures the air pressure needed to overcome the pressure of the liquid.

Description : Describe working principle of radiation level measurement with neat diagram.

Last Answer : Radiation type level measurement. Is non contact type detector which is used where electrical method would not survive. working principle 1.It consist of gamma ray source holder on one side ... 7. Thus, when liquid level rises, the amount of radiation received is reduced and vice versa.

Description : Draw and explain the working principle of ultrasonic level measurement system. Also give advantages, disadvantages and applications of it.

Last Answer : Ultrasonic level detectors operate either by the absorption of acoustic energy as it travels from source to receiver or by the attenuation (frequency change) of a vibrating diaphragm face, oscillating at ... without making physical contact with the process material. 2. They have no moving parts.

Description : Integrating principle in the digital measurement is the conversion of   (a) Voltage to time (b) Voltage to frequency (c) Voltage to current (d) Current to voltage

Last Answer : Integrating principle in the digital measurement is the conversion of Voltage to frequency

Description : is a non-contact type measurement which when directed at a heat source directly gives the temperature read out. a) Thermocouples. c) Contact thermometers. b) Humidity. d) Infrared thermometers

Last Answer : Infrared thermometers

Description : is a non-contact type measurement which when directed at a heat source directly gives the temperature read out. a) Thermocouples. b) Contact thermometers. c) Humidity. d) Infrared thermometers.

Last Answer :  Infrared thermometers.

Description : When would you measure the minimum preheat temperature? a) On completion of each pass b) Immediately prior to commencing the first pass and subsequent passes c) When the welding is ... preheat temperature measurement is only required if the heat input is lower than that specified in WPS

Last Answer : b) Immediately prior to commencing the first pass and subsequent passes

Description : Why does percentage error decrease as units of measurement increase?

Last Answer : answer:Well you can think of it in the sense that the longer something you measure is, the less the error is of the whole length. It's an inverse proportional relationship if you look at the formula. For instance if you use ... So for the 20.0mm=0.5/20.0=0.0250 while for the 30.0mm=0.5/30.0=0.0167

Description : What are the common types of measurement errors ?

Last Answer : There are usually three types of measurement errors.

Description : " Measurement of mass inertia" - Explain ?

Last Answer : If you want to move two objects from a stationary state with two objects of two different masses, more effort will be required in case of heavy objects. Similarly, if two objects are moving, more effort will ... in the case of heavy objects. This is why it is said that mass is a measure of inertia.

Description : What is the unit of measurement ?

Last Answer : The unit of measure for which the standard is measured is called the unit of that sign.

Description : What is the requirement of measurement in physics ?

Last Answer : There is a great need for measurement in every field in physics. The purpose of physics is to express everyday events in a coherent mathematical formula. These formulas were later used by various ... on test results . For all the above purposes, the measurement of physical quantities is inevitable.

Description : Measurement accuracy depends on what factors ?

Last Answer : The accuracy of the measurement depends on the following factors. 1. The device will not have any kind of mechanical defect , if there is a mechanical defect it will have to be diagnosed and ... the correct position to avoid parallax errors. 3. Avoid random errors and take average of more lessons.

Description : What are the units of measurement and what are they ?

Last Answer : There are two types of unit of measurement . Namely- (1) basic unit and (2) compound unit or acquired unit.

Description : What is the error and accuracy of measurement ?

Last Answer : Error is a negative word and when we say "error in measurement", we think that the person who measured has made an error because he did not fulfill his responsibility properly. It's not that the ... test results can be given by knowing some common rules to find out the accuracy of the test results.

Description : What is the error of measurement ?

Last Answer : In order to determine the value of a quantity in the laboratory, it is necessary to measure. Measurements are never accurate. There is a limit to the accuracy of all measurements. Even with sufficient ... - 1. Mechanical error 2. Observation error 3. Random errors and 4. Recurrent or systemic error

Description : What is the unit of measurement ?

Last Answer : The unit of measurement by which something is measured by comparison.

Description : What is measurement ?

Last Answer : Measurement is the measurement of something.

Description : 'Parsec' is the unit measurement of - (1) Density of stars (2) Astronomical distance (3) Brightness of heavenly bodies (4) Orbital velocity of giant stars

Last Answer : (2) Astronomical distance Explanation: The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.

Description : 'Parsec' is the unit measurement of – (1) Density of stars (2) Astronomical distance (3) Brightness of heavenly bodies (4) Orbital velocity of giant stars

Last Answer : (2) Astronomical distance Explanation: Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 x 1013 kilometres).

Description : The unit of measurement of noise is – (1) Decibel (2) Hertz (3) Amplifier (4) Acoustics

Last Answer : (1) Decibel Explanation: The decibel (dB) is the unit used to measure the intensity of sound or noise level. It is given in terms of a logarithmic function of a ratio of power intensities. One ... one bel, named in honor of Alexander Graham Bell who was the inventor of the telephone and phonograph.

Description : An instrument commonly used for the measurement of atmospheric pressure is known as A. Manometer B. Barometer C. Calorimeter D. Potentiometer

Last Answer :  Barometer

Description : Most appropriate instrument for measurement of internal and external diameter of a tube is A. vernier callipers B. micrometer screw gauge C. meter rule D. measuring tape

Last Answer : vernier callipers

Description : The ability of an atom to absorb neutrons is its neutron capture cross section. The unit of measurement for neutron capture cross section is: w) the nucleus volume x) capture capacity y) resonance quotient z) barn

Last Answer : ANSWER: Z -- BARN

Description : The unit of measurement of noise is (1) Decibel (2) Hertz (3) Amplifier (4) Acoustics

Last Answer : Decibel

Description : ‘Parsec’ is the unit measurement of (1) Density of stars (2) Astronomical distance (3) Brightness of heavenly bodies (4) Orbital velocity of giant stars

Last Answer : Astronomical distance