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Electrical resistivity method is based on measurement of _____________

Electrical resistivity method is based on measurement of _____________ Correct Answer Specific resistance

The electrical resistivity method is based on the measurement and recording of changes in the mean resistivity or apparent specific resistance of the various soils.

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Consider the following statements: 1. Dynamic cone penetration test for site investigation is based on the principle that elastic shock waves travel in different materials at different velocities. 2. Electrical resistivity method of subsurface investigation is capable of detecting only the strata having different electrical resistivity. 3. In-situ vane shear test is useful for determining the shear strength of very soft soil and sensitive clays and is unsuitable for sandy soil. Which of these statements is/are correct?
The electrical resistivity of the material of a conductor is ρ. If its length is doubled and area of cross-section is tripled, then its electrical resistivity will be
For better resistance welding, the metal must have
P. high electrical resistivity and low melting point
Q. high thermal conductivity
R. high electrical resistivity and high melting point
S. low thermal conductivity
Variation of electrical resistivity $$\rho $$ with temperature T of three solids is sketched (on different scales) in the figure, as curves P, Q and R.
Which one of the following statements describes the variations most appropriately?
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Match the following Device Conversion of Energy (a) Windmill (i) Chemical Energy to electrical energy (b) Bulb (ii) Kinetic Energy to Electrical Energy (c) Electrical Cell (iii) Sound Energy to Electrical energy (d) Microphone (iv) Electrical Energy to Light Energy
Which among the following are the anthropometric procedures for measurement?
1. Length measurement
2. Head circumference measurement
3. Weight measurement
4. Waist measurement`
In the electrical resistivity method, the unit of resistivity is ohms-cm.
What does hydropower change A. Kinetic energy to electrical energy B. Mechanical energy from electrical energy C. Chemical energy to electrical energy D. Wind energy to electrical energy
Consider the following statements for dynamic characteristics of a measurement system: 1. Fidelity is defined as the degree to which a measurement system indicates changes in the measured quantity without any dynamic error. 2. Dynamic error is the difference between the true value of the quantity changing with time and the value indicated by the measurement system if no static error is assumed. 3. Measuring lag is the retardation in the response of a measurement system to changes in the measured quantity. Which of the above statements are correct?
What of these can be used as a reasonable model for measurement system capability studies? Here y,x and ε denote the observed measurement, true measurement, and the measurement error respectively.