Fie prisma cu baza [ABC] un triunghi dreptunghic în B, isoscel |AB|=|BC|, A(10,10,0), B(70,10,0), ȋnǎlțimea prismei segmentul |BB1|= h=120. Prisma se sectionează cu un planul de capǎt [P] definit de Px (100,0,0) şi face un unghi de 45o cu planul [H]. Să se determine secțiunea rezultată şi adevarata mărime a acesteia, prin metoda rabaterii. Sǎ se desfǎşoare trunchiul de prismǎ [ABC123] rezultat.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.