Basic Machine Design Online Exam Quiz
Basic Machine Design GK Quiz. Question and Answers related to Basic Machine Design. MCQ (Multiple Choice Questions with answers about Basic Machine Design
A rolling contact bearing is specified as X307. Calculate the bearing diameter.
Options
A : 35mm
B : 28mm
C : 21mm
D : 7mm
The bearing is subjected to a radial load of 4000N. Expected life for 90% bearings is 9000h and shaft is rotating at 1500rpm. Calculate the dynamic load capacity.
Options
A : 42.21kN
B : 37.29kN
C : 26.33kN
D : 35.22kN
Calculate the bearing life if expected life for 90% bearings is 9000h and shaft is rotating at 1500rpm.
Options
A : 850 million rev
B : 810 million rev
C : 810 h
D : 850h
Extreme pressure causes ______ wear in the bearing parts.
Options
A : Abrasive
B : Corrosive
C : Pitting
D : All of the mentioned
Which of the following is expression for stribeck equation?(Number of balls=z)?
Options
A : C=kd²z/5
B : C=kd²z/15
C : C=kd²z/10
D : None of the listed
A rolling contact bearing is specified as X307. Determine the series.
Options
A : Extra light series
B : Light series
C : Medium series
D : Heavy series
In the expression of dynamic load capacity P=XVF(r) + YF(a), V stands for ?
Options
A : Race rotation factor
B : Radial factor
C : Thrust factor
D : None of the listed
Static load is defined as the load acting on the bearing when shaft is _____
Options
A : Stationary
B : Rotating at rpm<10
C : Rotating at rpm<5
D : None of the listed
Scoring is a ________ phenomenon.
Options
A : Stick-slip
B : Fracture
C : Fatigue
D : In-out
A total permanent deformation of 0.0001 of the ball diameter is taken for considering static load capacity of the shaft.
Options
A : True
B : False
C :
D :