Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new

 Categories >> Engineering >> Mechanical Engineering

 Civil Engineering Interview Questions (3072) Mechanical Engineering Interview Questions (3287) Electrical Engineering Interview Questions (13323) Electronics Communications Interview Questions (2362) Chemical Engineering Interview Questions (416) Aeronautical Engineering Interview Questions (77) Bio Engineering Interview Questions (17) Metallurgy Interview Questions (79) Industrial Engineering Interview Questions (163) Instrumentation Interview Questions (2375) Automobile Engineering Interview Questions (106) Mechatronics Engineering Interview Questions (38) Marine Engineering Interview Questions (43) Power Plant Engineering Interview Questions (75) Engineering AllOther Interview Questions (1195)
Question
`what is runout? how it is measure? which is the refrence?`
Question Submitted By :: Mechanical-Engineering
I also faced this Question!!     Answer Posted By

# 1
Runout is specified on cylindrical parts. It is
measured by placing a gage on the part, and
rotating the part through 360 degrees. The
total variation is recorded as the runout.

• Circular runout is measured at one location.
• Total Runout is measured along the entire
specified surface.

Info from :
http://engineering.dartmouth.edu/mshop/pdf/introdr.pdf

 Is This Answer Correct ? 148 Yes 9 No
Vennela

# 2
runout means the radial play of the rotor or shaft.
it must be in between 0.02 to 0.03 for large turbine rotors.
measuring method:

First of all u have to conform how many areas u want to
take run out. On that basis u put the dial guages on that
flanges or bearing journals.

setting of dial guage is in such a way that it must be sit
on the parting plane and the dial point must be touch that
corresponding flange or bearing journal.

press the dial upto 5mm pressure. and set the dial into
zero and that is the reference point i.e. zero point

rotate the rotor and take the readings for every 90 degrees
of rotation.
At zero degree what is the reading, not down

Out of these check where is the max reading u observed.
Whether the max reading is within the limit or not u check
thatone.

This total process i am telling is regarding turbine rotor
run-out only.
But whatever it may be the process is same but the limits
may change.

 Is This Answer Correct ? 66 Yes 5 No
Phani

# 3
Runout is a composite control which control form,
orientation and location. Runout is often used to control
coaxiality of diameters.
The conditions for Runout are
-> Datum reference is a must.
-> Geometric tolerance must be specified at RFS.
-> It must be applied to Cylinderical Feature Of Size(FOS).

 Is This Answer Correct ? 20 Yes 2 No
Rajkumar.r

# 4
Runout is specified on cylindrical parts. It is
measured by placing a gage on the part, and
rotating the part through 360 degrees. The
total variation is recorded as the runout

 Is This Answer Correct ? 1 Yes 0 No
Pavan Choudhary

# 5
Circular run-out or simply run-out is an error in the form
of mechanical components like cylindrical surfaces, shafts,
rotors etc. By definition, run-out refers to error of
roundness or form measured along a specified sectional plane
from the axis.
Mostly, this feature is measured using dial indicator while
the part or component is being clamped in the headstock of
lathe machine (for example). When measured using dial
indicator, two extreme values are obtained for a specified
sectional plane. Mathematically, the difference of these
extreme values is circular run-out.
Axial / Total Run-out:
When circular or radial run-out is measured along the axis
of rotation or simply axis of the part or component, then it
is called Axial or total run-out. To measure this, selection
of planes is necessary. For long components, it is advisable
to separate sectional planes equidistant almost 100 mm.
Mathematically, axial run-out is calculated as follows: -
first measure circular run-out along each sectional planes,
then look for extreme values i.e. maximum and minimum values
among all circular run-out readings so obtained using dial
indicator. The difference of extreme values along the axis
is called axial or total run-out.
suppose, there are 4 sectional planes selected for a shaft.
Readings of circular run-out obtained using dial indicators are:
Section Plane -1: Max:1.5, Min: 0.8
Section Plane -2: Max:1.6, Min: 0.7
Section Plane -3: Max:1.3, Min: 0.9
Section Plane -4: Max:1.45, Min:0.11
Maximum value among above values: 1.6
Minimum value among above values: 0.7
Axial Run-out= 1.6-0.7=0.9

 Is This Answer Correct ? 1 Yes 1 No

# 6
runout is a condition when a player named"run" gets out
while taking a run.it is measurd by inch tape.reference
taken from third umpire

 Is This Answer Correct ? 1 Yes 2 No
Akki

# 7
Its one of them innit. like. where the metals like a funny
shape like an egg or summat.

 Is This Answer Correct ? 3 Yes 5 No
Kriskinealy

# 8
Run out is flash like stucture .But it is diferent from flash
flash occure during improper ramming of sand,but in run out
there is ramming is done properly and deffect comes out
which flash like structure due to hydrostatic preassure of
molten metal and insufficeant weight of cope .to avoide it
ther must kept some extra weight over cope .

 Is This Answer Correct ? 0 Yes 2 No
Rohit Verma

# 9
Runout is also a metal casting defect. It is defined as a
leakage of molten metal from a cracked or broken shell, which
results in finning and/or loss of metal. The resulting
casting may contain non fill, short pour and/or shrink defects.

 Is This Answer Correct ? 3 Yes 7 No
Sarah

# 10
run out
 Is This Answer Correct ? 3 Yes 8 No
Ganesh

  Question Asked @ Answers Other Mechanical Engineering Interview Questions What is meant by cigarcone? RRB 3 WHY DOES LORRY TANKERS DESINGNED TO BE IN SPHERICAL(CURVED,ROUND), WHY DOESNOT IT DESIGNED TO BE AS SQUARE OR REACTANGLE IN SHAPE. Schlumberger 5 What is the difference between bolt and screw 3 why we made drawings in 1st and 3rd angle projection not in 2nd and 4th angle? NIN 5 if the principle stresses in a plan stress problem are @1=100 Mpa,@=40 Mpa, the magnitude of the maximum shear stress (in Mpa)will be 2 Water is available at 10m height. What is the pressure available ? Bhel 6 WHAT IS INSULATION? 1 difference between unilateral tolerance and bilateral tolerance Dover 3 What do you call a piston travel from TDC to BDC? RRB 4 who in india do the natural frecquency test on turbine blades Associated-Engineering 1 In case of AHU ,how to arrive at chilled water USGPM of the AHU in case the AHU CFM is given. Can some HVAC genius please advise. 3 Purpose of lubricator in a large diesel engine. 1 For more Mechanical Engineering Interview Questions Click Here