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Which of the following statements regarding superconducting materials are correct when a large number of metals become superconducting below a temperature? 1) The resistivity ρ of the superconductor is zero. 2) The magnetic flux density B vanishes through the substance. 3) Ferromagnetic and Antiferromagnetic metals are good examples of superconducting materials.
Consider the following statements for superconductivity: 1. Superconducting magnets capable of generating high fields with low power consumption are currently being employed in scientific test and research equipment. 2. One of the potential applications of superconducting materials is electrical power transmission through superconducting materials - power losses would be extremely low, and the equipment would operate at low voltage level. 3. Type II superconductors are preferred over type I for most practical applications by virtue of their higher critical temperatures and critical magnetic fields. Which of the above statements is/are correct?
Which of the following statements are correct for superconductors? 1. A substance loses its electrical resistance below a certain temperature. 2. Superconducting elements have greater electrical resistivity at room temperature. 3. On adding impurities to superconducting elements its transition temperature is increased.
In the question below, a statement is given, followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the suggested course of action logically follow (s) for pursuing. Statement: Led by a strong response to its first super sports utility vehicle Urus, Italian sports car maker Lamborghini is likely to more than double its volumes in India by the end of 2019, a year ahead of its plan, and cross the milestone of 50-60 vehicles per annum. The company, which began deliveries for Urus in India in September, said the vehicle is already booked for the coming six-nine months in India much like the global markets, and it will help Lamborghini get new. customers into its fold. Courses of action: I. The company is planning not to increase the price of its vehicle despite significant rupee depreciation and wants to protect the attractive price of Urus for prospective buyers.  II. The super sports utility vehicle will drive volumes, super sports cars such as Huracan and Aventador will grow by 8-10%. The company feels an 8-10% growth in the segment is a realistic expectation in spite of the challenges.  III. More than 68% of Urus buyers are first-time Lamborghini buyers and makers are sure that this will have a positive rub-off effect on the super sports car segment too.
Permeability tests were carried out on the samples collected from two different layers as shown in the figure (not drawn to the scale). The Relevant horizontal (kh) and vertical (kv) coefficients of permeability are indicated for each layer. The ratio of the equivalent horizontal to vertical coefficients of permeability is
Ideal super conductors completely become __________ at super conducting state.
With reference to Super Typhoon, consider the following statements: 1. Super typhoon has winds of at least 100 knots (120 mph; 190 km/h). 2. Recently Super Typhoon Goni made landfall into the Philippines. Which of the statements given above is/are correct?
A substance whose relative permeability is less than the permeability of free space is?
A substance whose relative permeability is more than the permeability of free space is?
Match the following  (a) a non-metal that exists in two forms (i) Chlorine (b) a non-metal which is liquid at room temperature   (ii) Zinc (c) a metal which is constituent of brass and bronze (iii) Carbon (d) a non-metal used for disinfecting water (iv) Bromine (e) a metal used in electroplating (v) Copper