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True or False: If the second piece of the joint fits a bit snugly into the first piece, use sandpaper to smooth out the channel.
True or False: A cutting diagram shows how parts should be arranged so they can be produced with the minimum number of cuts.
True or False: Clamp a scrap of wood along your cut line, it helps the blade in line and protects the surface if your saw skips.
True or False: A precise way to get the right drill bit size in predrilling is to match the shank size with the drill bit size.
A shell-and-tube heat exchanger has one pass on the shell side and two passes on the tube side (i.e.al-2shell and tube heat exchanger). It is being used for oil cooling. The oil flows in the tube side. It enters at 1120C and leaves at 78 0C The shell-and-tube fluid is water at a flow rate of1.35 kg/s, entering at 360C and leaving at 78 0C. The heat capacity of water is 4180j/(kg. K), and the overall heat transfer coefficient for the heat exchanger is 350 W/(m2.K). The geometry factor, F is 1.15. Determine the heat transfer area required for the unit.
Evaluate the following;
a. 9p2
b. 6p4
c. 12p3
d. 10p8
A die is tossed twice find the probability that;
a. A one and six occurs.
b. At least one three occurs.
c. Both numbers are the same.
A pipe of 6.5 cm outside diameter is covered with 5 cm (thickness) of asbestos layer
(conductivity = 0.12) and 4 cm (thickness) layer of cork (conductivity = 0.03). If the
temperature of outer surface of the pipe is 150 0 C and the temperature of the outer surface of
the cork is 35 0 C. Calculate the heat loss in W/m 0 C.
What is the effect of time constant on the response of a circuit?
Find the impulse response h[n] for a causal LTI discrete-time systems satisfying the given difference equations and indicate whether the system is a FIR or an IIR system.
y[n] - 1/2 * y * [n - 2] = 2x * [n] - x[n - 2]
