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1. A screw gauge consists of U- shaped metallic frame F. To one end of this frame, a flat shaft is fixed. On the opposite end of a hollow long cylinder C is fixed.2. The hollow cylinder has fine threads cut inside it and it serves as the nut.On the outer surface of this hollow cylinder, a line parallel to its axis, called index line is drawn and is divided into some equal divisions (1 mm or 0.5 mm). This serves as the pitch scale (P).3. A screw with a flat tip (shaft) having threads exactly identical to the threads cut inside the cylinder, moves through the cylinder C. To the other end of the screw, a milled head M is connected.4. To this milled head one end of a barrel B (another hollow cylinder) is connected. This Barrel B forms a jacket to the first hollow cylinder C.5. The other end of the barrel is tapered and has 100 or 50 equal divisions on it. This is called the head scale (H).6. When the two flat shafts exactly opposite to each other , are in contact, the distance between them is zero. In this position, the edge of the head scale must coincide with the zeroth division of the pitch scale.Further, the index line will be coinciding with the zero of the head scale
A lift is moving down with an acceleration of 3m/s. A ball is released 1.7m above the lift floor. How long will the ball take to hit the floor?
Curie's law (P. Curie) The susceptibility, khi, of an isotropic paramagnetic substance is associated to its thermodynamic temperature T through the equation khi = C/T
OHM's Law: The current passing by a conductor is directly proportional to the potential difference applied across it's end given, the temperature and other physical conditions
The density of neutrons is of the order: (1)10 3 kg/ cc (2)10 6 kg/cc (3)10 9 kg/cc (4) 10 11 kg/cc Ans:(4) 10 11 kg/cc
The power distribute to a 15 watt light bulb in normal operation is 15 watts. In normal operation how greatly energy is delivered to such a bulb in an hour? Feedback:
Kinematics of Projectile Motion One of the powers of physics is its capability to use physics principles to form predictions about the final outcome of a moving object. Such pr
A man pushes a couch a distance of 0.75 m. If 113 J of work is done. what is the magnitude of the horizontal force applied?
Ratio of masses of proton and electron is: (1) Infinite (2) 1.8x10 3 (3) 1.8 (4) None of these Ans: (2) 1.8x10 3
It is a method of depositing a thin layer of one metal over one more metal by the method of electrolysis. The articles of cheap solids are coated with valuable metals like silver a
Q. How does the laser printer works? Answer:- When a text or else image is entered into the CPU it produces a series of varying voltages. This manages a LED (light emittin
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