1
GATE ME 1997
MCQ (Single Correct Answer)
+1
-0.3
To restore stable operating condition in a hydrodynamic journal bearing, when it encounters higher magnitude loads.
A
oil viscosity is to be decreased
B
oil viscosity is to be increased
C
oil viscosity index is to be increased
D
oil viscosity index is to be decreased
2
GATE ME 1997
Fill in the Blanks
+2
-0
$$3$$ blocks of $${B_1},\,\,{B_2},\,\,{B_3}$$ are to be inserted in a channel of width $$'S'$$ maintaining a minimum gap of width $$T=0.125mm,$$ as shown in fig. For $$P = 18.75 \pm 0.08,\,$$ $$\,Q = 25.00 \pm 0.12,\,$$ $$\,R = 28.125 \pm 0.1$$ and $$S=72.35+X.$$ The tolerance $$' X '$$ is _______________. GATE ME 1997 Production Engineering - Metrology and Inspection Question 25 English
3
GATE ME 1997
Subjective
+5
-0
A metal strip is to be rolled from an initial wrought thickness of $$3.5$$ $$mm$$ to a final rolled thickness of $$2.5$$ $$mm$$ in a single pass rolling mill having rolls of $$250$$ $$mm$$ diameter. The strip is $$450$$ $$mm$$ wide. The average coefficient of friction in the roll gap is $$0.08$$. Taking plane strain low stress of $$140$$ $$MPa,$$ for the metal and assuming negligible spreading, the roll separating force is . . . . . . . . .
4
GATE ME 1997
Subjective
+5
-0
Welding of $$C40$$ steel plate of $$10mm$$ thickness required a current of $$16$$amps, while it was $$360$$amps when the plate thickness was increased by $$50\% $$. Estimate the welding current for $$8mm$$ thickness of same material.
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