1
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
A compacting machine shown in the figure below is used to create a desired thrust force by using a rack and pinion arrangement. The input gear is mounted on the motor shaft. The gears have involutes teeth of $$2$$ $$mm$$ module. GATE ME 2004 Machine Design - Design of Spur Gears Question 13 English

If the drive efficiency is $$80\% ,$$ the torque required on the input shaft to create $$1000N$$ output thrust is

A
$$20$$ $$Nm$$
B
$$25$$ $$Nm$$
C
$$32$$ $$Nm$$
D
$$50$$ $$Nm$$
2
GATE ME 1989
MCQ (Single Correct Answer)
+2
-0.6
In order to test the efficiency of reducer gear train $$1kW$$ input was given at the input end at a speed of $$1440$$ $$rpm$$ and at the output end the measured torque was $$56.36$$ $$N.m.$$ If the ratio of speed reduction in this unit is $$10:1,$$ the efficiency is about
A
$$78\% $$
B
$$85\% $$
C
$$63\% $$
D
$$96\% $$
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