You use an IR-thermometer that uses an assumed emissivity value of 0.95. What temperature will it show if a rooms ambient temperature is 20°C and you measure a surface temperature of 80°C and the true emissivity value is: a) 0.98 b) 0.92 c) 0.15

You use an IR-thermometer that uses an assumed emissivity value of 0.95. What temperature will it show if a rooms ambient temperature is 20°C and you measure a surface temperature of 80°C and the true emissivity value is: a) 0.98 b) 0.92 c) 0.15

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: QI1 Answer the following questions: The position of particle is given by s (t² - 6t + 4)m, where t…

A: Given: ∙ The position of particle is given by, S=t2-6t+4 m, where time 't' is in…

Q: D- Which type of manometer has a magnifying glass and a micrometer for precise reading of liquid…

A: Answer is D) Micro manometer

Q: Which is wrong about gas and liquid pressure thermometers? A) They are similar to Bourdan tube…

Q: specific enthalpy, specific internal energy, specific volume and specific kinetic energy has the…

A: Intensive properties are mass independent and extensive properties are mass dependent. Specific…

Q: Time left The amount of solar irradiation collected on a surface over a 12-month period is 350…

A: Given Total radiation received = 350 kWh/m2 Time = 12 months To find Average solar radiation

Q: All perfect gases have the same density at 25°C and 1 bar. a) True b) False

A: The given statement is FALSE.

Q: 3. The unit of kinematic viscosity is a) gm/cm-sec2 b) dyne-sec/cm2 c) gm/cm2-sec d) cm2/sec

A: Write the expression of kinematic viscosity. Here, μ is the dynamic viscosity, and ρ is the…

Q: Thế équipment room housing the compressor and condenser of a refrigerant ammonia system has…

A: A refrigerant is a working fluid or working substance used to extract heat from the storage space.…

Q: A Newtonian fluid having a viscosity of 0.38 N. s/m2 and a specific gravity of 0.91 flows through a…

Q: The outer surface of a long cylinder is kept at a constant temperature. There is no heat generation…

Q: In a certain locality the drybulb temperature is 35 C & the relative humidity is 70 %. At normal…

A: Given question is

Q: The illumination from a point source 4 ft. above a surface is 100 foot-candles, and the surface is…

Q: 10. Printer's ink is; a) Newtonian fluid b) Thixotropic substance c) Non-Newtonian fluid d) Ideal…

A: Ans; option (b) 1. Printer's ink is thixotropic substance. 2. Option (a) is wrong because newtonian…

Q: The following figure shows a journal bearing supports a radial load of 10 kN at speed of 2400 RPM.…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: The DP Transmitter device is used to measure level as an inferential measurement. When installing…

A: Differential pressure is calculated through the formula : Differential Pressure = Pressure High -…

Q: 1) Fill in the unknown properties for the materials given below. PLEASE EXPLAIN THE CALCULATIONS YOU…

A: Solution, Water All the values can be obtained using steam tables of water. To define a state only…

Q: t2 and b)p2 c)internal Heat and d)work

A: Given: p1=95.3+14.7 psia=15480 lb/ft2V1=0.6 ft3V2=3.6 ft3Cp=0.124 Btu/lbRCv=0.093 Btu/lbR To…

Q: XIV- NTC and PTC are where the first with negative and second one with positive coefficient. a)…

A: Problem is based on basic electrical and can be solved as

Q: 1.5) Fill in the blanks: A body whose surface properties are independent of wavelength is said to be…

Q: For a given element in a circuit, current through it was measured to be a constant 4.0 A. If the…

Q: 2) PAGASA Mactan reports the June 12, 2019 weather condition: Barometer pressure Dewpoint…

A: (a) To find: The relative humidity. Given: The dry bulb temperature is dbt=30°. The dew point…

Q: of Stanton numb- dtl númber (Pr) is Re) /Pr, b) St = Re ow heat exchange

A: introduction: here we solve only first three question:

Q: A horizontal move to the right on the psychrometric chart corresponds to which of the…

Q: d) D Roller Support Cable Support 20N 3N 50N

Q: 8. All the energy relations satisfy the mathematical condition in thermodynamics. a) True b) False

A: GIVEN DATA - A TRUE/FALSE QUESTION GIVEN WE HAVE TO SELECT CORRECT CHOICE

Q: Which temperature measurement device is mostly used in industry? A) Gas thermometry B) Thermocouples…

A: Thermocouples are a device consisting of two different electric conductors that form an electric…

Q: UPVOTE WILL BE GIVEN. ANSWERS ARE GIVEN ALREADY. PLEASE WRITE THE COMPLETE SOLUTIONS. A room…

A: In the atmospheric pressure a chart with the help of which the physical and the thermal properties…

Q: Given a1000ft2 space with lighting wattage at 2 watts per ft2 and 80% of the the heat goes into the…

A: Space area (A) =1000 ft2lighting wattage at 2 watts per ft2 and80% of the the heat goes into the…

Q: What does this graph saw about ice melting at zero degrees Celsius?

A: In general, heat transfer is a thermodynamic process where heat transfers from the high-temperature…

Q: In a certain locality the drybulb temperature is 35 C & the relative humidity is 70 %. At normal…

Q: Which of the following should be used to measure very high temperatures? A) Termistor B) Peltier…

A: The temperature measuring range of the thermistor is -55°C to +114°C. Peltier is used to measure low…

Q: 3. What is the unit of Helmholtz free energy? a) Kelvin b) Joule c) Kilowatt d) Newton

Q: The mechanical characteristic shown at right is: a) stiff b) absolutely stiff c) mellow d) other

A: This question is based on the concept of Mechanical characteristic.

Q: What is the definition of the term "adiabatic process?" A manual pump is used to lift water out of a…

Q: I know that my answer b. was correct. But for future references, how do I know for sure the Psig…

A: In a pneumatic control system, Position of the valve shaft or stem will be compared with position of…

Q: cokulate te rate of heat tr in the cauity per unit depth

A: Thickness of air cavity, t=2.5 cm=0.025m Base temperature, T1= 80oC Top temperature, T2=40oC Length…

Q: 5) A particle is dropped from a height of 100 m. Determine the time required for the particle to…

A: The height is The acceleration when there is air resistance is

Q: For Cairo Egypt in January the average net radiation 40 W/m2, temperature is 14°C. relative humidity…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: a)P2, b)delta H, c)delta U,

A: As per our company guidelines we are supposed to answer only first 3 sub parts in case of multiple…

Q: If the temp is 22 degrees C & the pressure is 770mm mercury , the correction to an ionization…

A: Given data as per the question Temperature =220cstandard ambient temperature =220cPressure =770…

Q: Knowing that tanks exposed into the atmosphere have pressure of atm. What is the design pressure?…

A: The tank design on basis of pressure can be done by three ways: Atmospheric pressure design Full…

Q: Barometer pressure: 1 Atmosphere Dewpoint temperature: 15 C Drybulb temperature : 30 C Determine the…

A: Given data: Barometer Pressure = 1 atm Dewpoint Temperature = 15°C Dry bulb Temperature = 30°C…

Concept explainers

Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.

Question

You use an IR-thermometer that uses an
assumed emissivity value of 0.95. What
temperature will it show if a rooms ambient
temperature is 20°C and you measure a
surface temperature of 80°C and the true
emissivity value is:
a) 0.98
b) 0.92
c) 0.15

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

_8. A thermocouple with test junction at t°C on gas thermometer scale and reference junction at ice point gives the e.m.f. as : e = 0.20 t-5 x 1044² mV. The millivoltmeter is calibrated at ice and steam points. What will be the reading on this thermometer where the gas thermometer reads 70°C ? A) 75 °C B) 77 °C C) 82 °C D) 85 °C _9. A temperature scale of certain thermometer is given by the relation t= a In p+b where a and b are constants and p is the thermometric property of the fluid in the thermometer. If at the ice point and steam point the thermometric properties are found to be 1.5 and 7.5 respectively what will be the temperature corresponding to the thermometric property of 3.5 on A Rankine scale. A) 52.63 B) 126.73 C) 586.73 D) 325.63 _10.Estimate the mass of a piston that can be supported by a gas entrapped under the piston in a 200 mm diameter vertical cylinder when a manometer indicates a difference of 117 mm of Hg column for the gas pressure. A) 40 kg B) 50 kg C ) 60 kg D)…
Q22 155 Poor power factor results in: a) Higher energy losses b) Higher load current c) Both a & b d) Neither a or b
19. Convert the following pressure readings to kPaa assuming that the barometer reads 760 mm Hg. a) 40 cm Hg vacuum; b) 100 psig; c) 8 in Hg vacuum; d) 900 mm Hg gage
In an auto repair service, a hydraulic platform raises a 1800kg car 1.6m. The hydraulic pump maintains constant pressure of 950kPa in its piston. How much volume should the pump displace to deliver that amount of work? O A) close to 30L O B) close to 50L C) close to 55L D) close to 4OL O E) cdlose to 35L F) close to 45L
0:YV Homework 1.pdf > 1. Convert the following: a) 120 g mol ol NaCl to g. b) 120 g of NaCI to g mol. c) 120 lb mol of NaCl to lb. d) 120 lh of NaCl to Ih mol 2. Convert 39.8 kg of NaCl per 100 kg of water to kg mol of NaCl per kg mol of water. 3. How many Ib mol of NaNO, are there in 100 lb? 4. The density of a material is 2 kg/m'. What is its specific volume? 5. An empty 10 gal tank weighs 4.5 Ib. What is the total weight of the tank plus the water when it is filled with 5 gal of water? 6. If you add 50 g of sugar to 500 ml of water, how do you calculate the density of the sugar solution? 7. For ethanol, a handbook gives: sp. gr. 60°F = 0.79389. What is the density of ethanol at 60 F? 8. The specific gravity of steel is 7.9. What is the volume in cubic feet of a steel ingot weighing 4000 Ib? 9. The specific gravity of a solution is 0.80 at 70°F. How many cubic feet will he occupied hy 10X0 Ih of the solution at 70'F? 10. A solution in water contains I.704 kg of HNOkg H;0, and the…
It is common to place an evaporator in a position a) close to the ground b) near the ceiling The humidity present in the air is related to this type of energy. b) latent heat a) sensible heat c) potential energy
Two flat 1m x 2m panels are spaced 3m apart. The top panel is exposed to the sun and is currently 200oC. The bottom panel is not exposed to the sun. The panels have an emissivity of 0.3. a) If the bottom panel is absorbing 200W of thermal radiation, what is the temperature of the bottom panel? b) If the bottom panel is chilled to −60oC, how much radiation does it absorb?
9. In Figure (1), if på – Pa = 80 kPa, the value of H is: Meriam red oil, 18 cm Sig.= 0.827 А) 8.8 ст В) 12.5 ст C) 15.6 ст D) None of the above Water Mercury A s.g.=13.6 35 cm В Figure 1 Manometer
The two metallic strips that constitute some thermostats must differ in: A) length B) thickness C) mass D) coefficient of linear expansion E) rate at which they conduct heat
Using the SEER calculation, how much money would you spend to run your air conditioning system if it cost $.10 per Kw during the cooling season? 3 TON, 14 SEER unit. Remember the unit will run for about 976 hours during this season. O $390.80 $450.30 O$250.97 $100.00
If you exhale slowly on a cold day, your breath becomes visible. Why? It’s not rising or falling a great distance.