1
GATE ME 2006
MCQ (Single Correct Answer)
+2
-0.6
Twenty degree full depth involute profiled $$19$$-tooth pinion and $$37$$-tooth gear are in mesh. If the module is $$5mm,$$ the center distance between the gear pair will be
A
$$140mm$$
B
$$150mm$$
C
$$280mm$$
D
$$300mm$$
2
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 12 English

If the pressure angle of the rack is $${20^ \circ },$$ the force acting along the line of action between the rack and the gear teeth is

A
$$250$$ $$N$$
B
$$342$$ $$N$$
C
$$532$$ $$N$$
D
$$600$$ $$N$$
3
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
$$50$$ $$Nm$$
4
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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