Estion 1
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The term CNC stands for:
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NO : THIS FILE FOR PLM-1000 MILL
IN USE 3 X 2 X 1.5 MACHINABLE 1
N2 : INITIALIZE STOCK TO X=0, Ya!
N3 ; 11 IS A 1/4 END MILL
IN4 ; T2 IS A 1/8 END MILL
N5 M06 T01 ; Toolchange 1/4 Endi
N6 M08; Contouring Operation, COI
NW M3 1500.00
N8 GO ZO. 0700 : Retract
N9 GO XO. 3000 YO. 2000
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Select one:
a. Commanding Numerical Computer
b. Controlling Numerical Computer
c. Computer Numerical Control
d. Computer Numerical Commands

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

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