A Best Way To Crack Gorenment Job Exams

Mechanical Engineering Objective Questions { Engineering Metrology }



127. The cross-section of straight edges upto 180 mm length is
A.Rectangular
B.Circular
C.I-section
D.Elliptical
Discuss in Forum

128. 'Optical micrometer is used to
A.Measure small linear displacements
B.Measure surface profiles
C.Measure surface roughness
D.Set very small displacement by rotating the glass block through relatively large angles
Discuss in Forum

129. Airy points of support are
A.0.577 L apart
B.0.554 L apart
C.0.5 L apart
D.0.58 L apart
Discuss in Forum

130. The maximum munber of faces in precision polygons can be
A.6
B.72
C.12
D.20
Discuss in Forum

131. In precision polygon, a central hole and small holes are drilled through the thickness
A.For mounting purposes
B.To achieve high accuracy
C.For ease of manufacture
D.To make them light
Discuss in Forum

132. Precision polygons are calibrated from first principles using
A.One autocollimator
B.Two autocollimators
C.Three autocollimators
D.Two precision spirit levels
Discuss in Forum

133. The fact that how closely the instrument reading folloVis the measured variables is termed as
A.Fidelity
B.Accuracy
C.Threshold sensitivity
D.Precision
Discuss in Forum

Page 19 of 32

« 17 18  19  2021 »