Answer / wasim yuhana

Choking in case of pipe flow refers to a situation when the exit velocity in the nozzle reaches Mach No. 1. In this case, the mass flow rate is not altered by further decreasing the exit pressure.

What causes steam turbine governer hunting?

7 Answers   Bhel,

---

2. Dry saturated steam at 3.5 bar is expanded through a convergent nozzle to 2.2 bar. The exit area is 5 sq. cm. Calculate the exit velocity and mass flow rate, assuming isentropic expansion and super saturated flow. b) A cast iron cylinder head is fastened to a cylinder of 750mm bore with 12 stud bolts. The maximum pressure inside the cylinder is 3 Mpa. The stiffness of part is thrice the stiffness of the bolt. What should be the initial tightening load so that the point is leak proof at maximum pressure? Also choose a suitable bolt for the above application 2 The propeller shaft of a marine engine is to transmit 600 kW at 1200 rpm, without a significant bending. The efficiency of the propeller is 88% at 32 knots ( 1 knot = 1085 km/hr). If the slenderness ratio is less than 50 and the permissible shear stress should not exceed 65 Mpa. Determine the diameter of shaft. 3 A semi-elliptic leaf spring consists of two extra full-length leaves and six graduated length leaves, including the master leaf. Each leaf is 7.2 mm thick and 65 mm wide. The centre-to-centre distance between the two eyes is 1.3m. The leaves are pre-stressed in such a way that when the load is maximum, stress induced in all leaves are equal to 380 N/mm sq. Determine the maximum force that the spring can withstand

0 Answers  

---

What is L 110 spider? What does L &110 indicate

1 Answers   Emmennar Pharma, Mega Limited,

---

what is the difference between impact force and sudden force? pls give any example.

0 Answers  

---

how to calculate the turbine efficiency?

1 Answers  

---

what is the difference between ASTM A572 GRADE 50 ［Fyld 345 MPa ］ and IS2062 GRADE A E250 ［Fe410 WA］?

0 Answers  

---

effect of temperature on stainless steel,aluminized steel,chromium at (500C-750C)-required for project work on silencer 1.thermal conductivity 2.heat conduction 3.mechanical strength 4.temperature to weight ratio urgent

0 Answers   Essar,

---

Function of nozzle holden

0 Answers  

---

What is a slined joint?

0 Answers  

---

Is there is a collection of interview questions for Engineering services examination conducted by UPSC.

0 Answers  

---

what is thermodynmaics

11 Answers  

---

I heard that the acetylene cylinder pressure can't be brought down below bar while using for welding activity. Is it true. . If so pl explain why

0 Answers  

---