Determine the heat exchange per m² of area a, between the surface specified below if surface 1 is at 1000 k while surface 2 is at 400 k. all surfaces are black. (i) large parallel planes (ii) long coaxial cylinders of 0.5 m and 1 m dia with inner cylinder hotter. (iii) concentric spheres of 1 m and 2 m dia with inner surface hotter. (iv) parallel planes of 2 m x 2 m size placed symmetrically 1 m apart.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

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

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)