1
GATE PI 1990
MCQ (Single Correct Answer)
+2
-0.6
For cutting double start screw threads of pitch $$2.0$$ $$mm$$ on a lathe, the thread cutting tool should have a feed rate of
A
$$0.5$$ $$mm/rev$$
B
$$1.0$$ $$mm/rev$$
C
$$2.0$$ $$mm/rev$$
D
$$4.0$$ $$mm/rev$$
2
GATE PI 1990
MCQ (Single Correct Answer)
+2
-0.6
The diameter and rotational speed of a job are $$100mm$$ and $$500$$ $$rpm$$ respectively. The high spots (chatter marks) are found at a spacing of $$30$$ $$deg$$ on the job surface. The chatter frequency is
A
$$5$$ $$Hz$$
B
$$12$$ $$Hz$$
C
$$100$$ $$Hz$$
D
$$500$$ $$Hz$$
3
GATE PI 1990
MCQ (Single Correct Answer)
+2
-0.6
A milling cutter having $$8$$ teeth is rotating at $$100$$ $$rpm.$$ The work piece feed is set at $$40mm/min$$. The feed per tooth is
A
$$5mm$$
B
$$0.05mm$$
C
$$0.4mm$$
D
$$0.2mm$$
4
GATE PI 1990
MCQ (Single Correct Answer)
+2
-0.6
The base of a brass bracket has to be rough ground to remove the unevenness. The $$4$$ wheels available in the store. The appropriate wheel is
A
$$A\,\,30\,\,K\,\,12\,\,V$$
B
$$C\,\,90\,\,M\,\,4B$$
C
$$C\,\,30\,\,Q\,\,12V$$
D
$$C\,\,50\,\,G\,\,8V$$
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