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A steel tube of 30 mm external diameter and 20mm internal diameter encloses a copper rod of 15mm diameter to which it is rigidly joined at each end. If at a temperature of 10o C, there is no longitudinal stress, evaluate the stresses in the rod and the tube when the temperature is raised to 200o C. Take E for steel and copper are 2.1 x 105 N/mm2 and 1x 105 N/mm2 respectively. The value of coefficient of linear expansion for steel and copper is given as 11 x 10-6 per degree C and 18 x 10-6 per degree C respectively.
One of the simplest devices that have both vertical and horizontal motion is a slide or chute. It may be straight or spiral and is static in nature. Gravity is utilized in
Derive a formula for a bell coleman efficiency
(a) What do you mean by machinibility ? Discuss the factors which come into play while evaluating the machinability of any metal. Also describe machinability index. (b) Brass co
Q. What is Gust Response Factor? For flexible structures such as a tall vertical process vessel, a Gust Response Factor, Gf is another essential variable needed to determine th
Consider radar with a PRF of 5 kHz. What is the maximum unambiguous range R ua of this radar, in km? If a target is located at a range of 50 miles, how many pulses will the r
slidder crank chain / reciprocating engine mechanism pics
Advantages of resistance welding 1. Resistance welding is very fast compared to arc welding. 2. Almost any combination of metals can be resistance welded provided necessa
Determine maximum internal diameter of hollow shaft: A solid shaft of mild steel which is 200 mm in diameter is to be replaced by hollow shaft of alloy steel for which the al
Two shafts A and B are co-axial. A gear C (50 teeth) is rigidly mounted on shaft A. A compound gear D-E gears with C and an internal gear G. D has 20 teeth and gears with C and E h
What is difference between mill and mill-drill? Ans) Today many manufactures are combining machines; a mill/drill is one of these. It is a mixture of a drill and a mill, a mill
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