Answer / Daud Ali

An Outside Micrometer (or Vernier Caliper) is used for external measurements. It's a precision measuring instrument used to measure the outer dimensions of objects or the distance between two parallel surfaces.

sir most regardly i want previous papers of your company for my preparation of my written exam

0 Answers  

---

i am trying to select the correct grade steel for a shaft that will have a flap on it weighing about 4.5 tons being forced up with hydraulic rams. can someone tell me what grade the shaft should be and if it should be stainless steel or not

2 Answers   Rainford EMC Systems,

---

8000 Liter Water in 80 degree Celsius will generated how many STEAM ?

1 Answers  

---

How catalyst converter works?

1 Answers  

---

1. What will happen if the armature rheostat is not in maximum position while starting the motor? 2. What will happen if the armature resistance is in minimum position and the eld resistance is in maximum position while starting the motor? 3. How do you reverse the direction of rotation of a DC motor? 4. If the armature connection and the eld connection both are reversed, does the direction of rotation of the motor reverse?

2 Answers  

---

What is the gas constant r for air?

1 Answers  

---

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

1 Answers  

---

What if the formula to calculate the CFM in airconditioning

1 Answers  

---

How to calculate heat load .For example 10 TR .Then how we will find load (we want rh(relatavie humidity) sir)

1 Answers  

---

if silica is removed from DM Plant completely from where the silica come in Boiler Drum

9 Answers   BARC, SSA,

---

what is difference between british wire guage & birmingham wire guage

1 Answers  

---

Suppose there are two cylinders / vessels.In one cylinder the pressure is 1.5 bar & in other 0.5 bar.If both cylinder are connected internally through valve connection, what will be the final pressure in both?

19 Answers   BARC, Bhel, HPCL,

---