Answer / krishna kanth

smaller vehicles like bikes, cars are started with the help
of motors. initialy, motors turn the crank shafttill
sufficient suction pressure is reached. when sufficient
suction pressure is reached, the engine starts to suck the
fuel in and then the cycle begins when the fuel is taken in
and ignited. similarly, for huge engines, instead of
motors, we use starting air. air at a pressure of 10-30 bar
is fed to the engine which is at rest. this air rotates the
engine till it attains sufficient suction pressure. once
the pressure is reached, the cycle starts and it starts
firing.During compression, the energy of the previous cycle
is utilised by the virtue of the FLY WHEEL.

Answer / steve douglas

Engines do not suck air, the piston moves down within the cyl. This action creates a void for atmospheric pressure to fill the cylinder through the open inlet valve.
Back to the question, the simple answer is reciprocal.

what is mpa

2 Answers  

---

Arrange the efficiency of the engine in decreasing order Otto, Diesel, dual

22 Answers   NTPC,

---

in tpp how steam pr. decreases from steam drum to main steam line

0 Answers  

---

what is machnical interlock? explain the uses.

1 Answers  

---

What is a liquid flooding in refrigeration system?

0 Answers   Bhel, RRB,

---

---

Are mechanical seals in pumps direction specified?

4 Answers   Sail,

---

What causes cylinder liner-wear down?

0 Answers  

---

Which instrument has all the features of try-square, bevel protractor, rule and scriber?

0 Answers  

---

What is the purpose of thrust bearing?

1 Answers   RRB,

---

hi, can anyone help me by providing some sample question papers of reliance industries limited?

2 Answers   Reliance,

---

why valves not used in two stroke engines?

11 Answers  

---

where i can get APPSC AEE(Mechanical Engg) previuos question papaers

0 Answers   APPSC, Bhel, Tata Indicom,

---