diffuser increases pressure but in turbine pressure is
decreasing when steam passing through casing?
plz send me paper of mppgcl 2008 or experience posted by
pl. send me jr.engg.model question for rrb malda.
how can we calculate the size of bearing with the size of
why we use charcoal layer in aqua silencer to purify the gases??
what is the calculation of selection ofan capacity is 12000m3/hr.
related to bearing
please send placement paper of bpcl
A very strange fault i cam across today,that i never
experienced not studied before, i need an answer for this.
Phase to phase or line to line , L1,L2 & L3, voltages are
490VAC, but if i use line to ground , its again 490 VAC. . .
whats the fault and theory behind of it?
please sent last five years junior engineer mechnical
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
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
Determine the maximum force that the spring can withstand
how many types of oil spilling available .what types of tools
using for oil spillling precautions.
HI I am going to write HAL for the post of management
trainee. I need model / Sample Question . Plz help me