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Which of the following methods are used for producing damping torque in analog instruments? 1) Air friction damping 2) Fluid friction damping 3) Eddy current damping 4) Electromagnetic damping
Consider the following types of damping: 1. Air-friction damping 2.Fluid-friction damping 3.Eddy-current damping PMMC type instruments use which of the above?
If the poles lie in second quadrant, damping ratio is
Find critical damping coefficient if damping ratio is 0.5 and damping coefficient is 1.1.
If the damping factor is less than the damping factor at critical damping, the time response of the system is ___________
If ab < 0 and the point (-b, a) lies in the IV quadrant. In which quadrant does the point (-a, -b) lie?
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Magnets have south and north poles. P. Electromagnets are similar to other magnets but their magnetic properties are temporary.  Q. Opposite poles of two magnets attract whereas like poles repel each other. R. This is the basic principle behind electromagnetic propulsion.  S. It is easy to create a small electromagnet. 6. You only have to connect the ends of a copper wire to the negative and positive ends of an AA, C or D-cell.
A train of length 549 m traveling at a speed of 70 km/hr crosses 30 poles, with the distance between the two consecutive poles being the same, in 4 min 3 seconds, What is that distance between the two poles?
What will be the total weight of 10 poles each of the same weight ? I. One-fourth of the weight of a pole is 5 kilograms. II. The total weight of three poles is 20 kilograms more than the total weight of two poles.
Question : What will be the total weight of 10 poles, each of the same weight ?

Statements :
I. One-fourth of the weight of each pole is 5 kg.
II. The total weight of three poles is 20 kilograms more than the total weight of two poles.