Refer to Figure P2.79 but assume that the cantilevered beam loaded by a force F is made of steel. Strain gauges
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
Principles and Applications of Electrical Engineering
- How temperature effect conductivity? Explain with the help of following equation. m e'n7'arrow_forwardLoad cells are used for the measurement of:Select one:a. Velocity O b. StrainO c. WeightO d. Stressarrow_forward2:34 ull 4G I moodle1.du.edu.om An RTD forms one arm of a Wheatstone bridge as shown in the figure. The RTD is used to measure a temperature with the bridge is operated in a balanced mode. The RTD has a resistance of 252 at a temperature of 0°C and a thermal coefficient of resistance a=0.003925C-1. The value of the variable resistance R, must be set to 41.485 Q to balance the bridge circuit. Determine the temperature measured by the RTD where R2=R3=1002 R2 R3 RTD RRTD E, Select one: O a. 4200arrow_forward
- Conductors A and B are connected in parallel. Their respective specific resistances are in the ratio 36 : 25. The former carries 20 per cent more current than the latter and the latter is 35 per cent longer than the former. Determine the ratio of their cross-sectional area(A:B).arrow_forwardYou are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M to ground. Your ohmmeter, however, indicates a resistance of 1.5 across terminals S1andS2. The ohmmeter indicates a resistance of 225 between terminals F1andF2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer.arrow_forwardWhich one or ones of the following statements about Kirchhoff's rules are correct? I) The junction rule is based on the law of conservation of energy. II) The loop rule is based on the law of conservation of energy. III) The number of required equations to find the unknown currents has to be as many as the number of all possible loops. O A) Il and II B) II O C) I and II O D) II O E) Iarrow_forward
- A resistance strain gauge with a gauge factor of 2.0 is fastened to a steel member subjected to a stress of 100 N/mm². The modulus of elasticity of steel is approximately 2×105 N/mm². The percentage change in resistance is?arrow_forwardFind the potential difference between point a and point b for the situation shown below. Here ₁ = 12.0 V, E₂ = 8.77 V and R₁ = 4.13, R₂ = 5.44 , and R3 = 2.28 0. Va - Vb = R₂ V R3 R₁ Warrow_forward. Using the I – V curves how are ohmic materials different from non-ohmic materialsarrow_forward
- How do you find the current that passes through the 1 Ohm resistor if there are two junctions? Do we have to use the Kirchoff's Junction Rule and/or is there another way?arrow_forwardProblems I A potentiometer with a uniform resistamce per unit length of track has a total resistance of 2 k2 and a supply voltage of 10 V is connected across it. The output from the potentiometer is connected across a load of resistance 5 k2 What will be the error due to this loading when the slider is at the mid-point of the potentiometer track? -2 A potentiometer with a uniform resistance per unit length of track is to have a track length of 100 mm and used with the output being measured with an instrument of resistance 10 k2. Determine the resistancearrow_forwardUsing Kirchoff's laws, find the currents and the voltages for the figure.arrow_forward
- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning