IN ONE IN ARE A GEAR TRAIEED REDUCTTIONS (GREAATER THAN 2LARGE SPE...
20) in one
in are
a gear trai
eed reduct
tions (grea
ater than 2
Large spe
stage of a
GATE-26.
possible t
[GATE-
hrough
-2002]
d) Helical ge
ring (d
aring
aring (c)
earing (b)
) Bevel gear
(a) Spur ge
) Worm gea
Ans. (b)
GATE-26
A
1440 rev/m
A 1.5 kW m
motor is ru
unning at
cted to a st
tirrer
o be connec
min. It is to
GATE-27.
The gearin
v /min. T
r this
ng arrang
itable for
gement su
running
at 36 rev
on is
-2000]
applicatio
ntial gear
(a) Differen
(b) he
elical gear
( ) S
(d)
Design of Power Transmission System
S K Mondal’s
Chapter 3
GATE-28
. To make a worm drive reversible, it is necessary to increase [GATE-1997]
(a) centre distance
(b) worm diameter factor
(c) Number of starts
(d) reduction ratio
GATE-28
Ans. (c)
Previous 20-Years IES Questions Spur gearIES-1.
The velocity ratio between pinion and gear in a gear drive is 2.3, the
module of teeth is 2.0 mm and sum of number of teeth on pinion and gear
is 99. What is the centre distance between pinion and the gear? [IES 2007]
(a) 49.5 mm
(b) 99 mm
(c) 148.5 mm
(d) 198 mm
2
×
99 = 99mm
m
(T
1
+ T
2
) =
D
+
=
mT
+
=
IES-1. Ans. (b) Centre distance =
2
1
D
1
mT
IES-2.
Consider the following statements:
[IES-2001]
When two gears are meshing, the clearance is given by the
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