Bissoy.com
Doctors Medicines MCQs Q&A

What is the condition of roughness of earth for earth to be electrically smooth?

What is the condition of roughness of earth for earth to be electrically smooth? Correct Answer R < 0.1

Earth is classified as electrically smooth and electrically rough. If the roughness of earth R < 0.1, then it is electrically smooth. If the roughness of earth R > 10, then it is electrically rough.

Related Questions

The figure below shows a symbolic representation of the surface texture in a perpendicular lay orientation with indicative values (I through VI) marking the various specifications whose definitions are listed below. P: Maximum Waviness Height (mm); Q: Maximum Roughness Height (mm); R: Minimum Roughness Height (mm); S: Maximum Waviness Width (mm); T: Maximum Roughness Width (mm); U: Roughness Width Cutoff (mm); The correct match between the specifications and the symbols (I to VI) is
In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of
A shaving set company sells 4 different types of razors, Elegance, Smooth, Soft and Executive. Elegance sells at Rs. 48, Smooth at Rs. 63, Soft at Rs. 78 and Executive at Rs. 173 per piece. The table below shows the numbers of each razor sold in each quarter of a year. Quarter/Product Elegance Smooth Soft Executive Q1 27300 20009 17602 9999 Q2 25222 19392 18445 8942 Q3 28976 22429 19544 10234 Q4 21012 18229 16595 10109 Which product contributes the greatest fraction to the revenue of the company in that year?
Consider the following statements: 1. All machines consume energy. 2. Electricity provides energy. 3. Electrically operated machines are cheap to maintain. 4. Electrically operated machines do not cause pollution. Which one of the following inference can be drawn from the above statement?
Which of the following statements are correct statements? (a) Masonry check dams are used for controlling gully erosion and water harvesting. (b) soil cloudiness, surface roughness, roughness, soil curst and soil moisture are the main factors affecting water erosion. (c) In Agronomic measures water erosion is controlled by appropriate crops and cropping systems. (d) Stubble mulching and minimum tillage be practiced to minimise wind erosion.
Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time 't'. α = a co-efficient to be experimentally determined)?
The phases of the moon as we see from the Earth are due to changing relative positions of the sun, the earth and the moon. Which of the following statements is true. A. on a full moon day, the earth comes between the sun and the moon B. on a new moon day, the moon is in between the earth and the sun C. on a full moon day, the moon is in between the earth and the sun D. on a new moon day, the earth is between the sun and the moon? E. on a new moon day, the sun is between the moon and the earth
Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will
Which of the following is/are the condition(s) related to aggression in socialization studies? I. Aggression – rewarded condition II. Aggression – punished condition III. No – consequences condition
Which of the following statements are true about quicksand? i. It is only a condition but not a type of sand. ii. It is a condition and a type of sand too. iii. Quicksand condition reaches when critical hydraulic gradient is approximately equal to unity. iv. Quicksand condition occurs more commonly in coarse grained sand or gravels than fine sand.