# Engineering

## 2. DISTANCE BY STADIA A stadia rod held at a distant point B is sighted by an instrument set up at A. The upper and lower stadia hair readings were observed as 1.300m and 0.900m, respectively. If the stadia interval factor (k) is 100, and the instrument constant (C) is zero, determine the length of line AB

EXPERT ANSWER THUIS IS BASED ON THE PRINCIPLE THA THE RATION OF PERPENDICULAR TO THE BASE IS CONSTANT IN SIMILAR ISOSCELES TRIANGLE. D= KS + C WHERE K = STADIA INTERVAL FACTOR(MULTIPLYING CONSTANT)=100 C = INSTRUEMENT FACTOR(ADDITIVE CONSTANT)=0 S= STAFF INTERCEPT=1.300-0.900=0.400m D= 100*0.400+0 D=40m(length oF line AB)

## 5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy is u1 = 2709.9 kJ/kg, to state 2, where u2 = 2659.6 kJ/kg.

5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy is u1 = 2709.9 kJ/kg, to state 2, where u2 = 2659.6 kJ/kg. During the process, there is heat transfer to the steam with a magnitude of 80 kJ. Also, a paddle wheel transfers energy …

## 5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy is u1 = 2709.9 kJ/kg, to state 2, where u2 = 2659.6 kJ/kg.

5 Kg Of Steam Contained Within A Piston-Cylinder Assembly Undergoes An Expansion From State 1, Where The Specific Internal Energy Is U1 = 2709.9 KJ/Kg, To State 2, Where U2 = 2659.6 KJ/Kg. During the process, there is heat transfer to the steam with a magnitude of 80 kJ. Also, a paddle wheel transfers energy …