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# SSC-JE ME || Technical Quiz 23

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Question 1

The wet bulb depression is zero, when relative humidity is equal to

Question 2

Boundary layer flow seperates from the surface if

Question 3

Which of the following is NOT considered as a basic type of strain?

Question 4

What is the maximum acceleration of follower in a cam and follower mechanism undergoing simple harmonic motion if the cam rotational angle is and is rotation speed of cam ?

Question 5

A 3-stage reciprocating compressor has suction pressure of 1 bar delivery pressure of 27 bar. For minimum work of compression, the delivery pressure of 1st stage is

Question 6

For an isochronous governor, the controlling force at a radius of 50 mm is 250 N. The controlling force at 75 mm radius will be:

Question 7

Minimum number of teeth to avoid interference is for a pressure angle of

Question 8

The term ‘effort of governor’ refers to __________.

Question 9

Match List I with List II and select the correct answer using the codes given below the lists.

List-I

A) Dynamic viscosity

B) Moment of Momentum

C) Power

D) Volume modules elasticity

List-II

1) [ML2T3]

2) [ML-1T-2]

3) [ML-1T-1]

4) [ML2T-2]

5) [ML2T-1]

Question 10

An governor has its arms a = b = 27.94cm. If r = 20.32 cm determine the controlling force for the isochronous governor

Question 11

The outer surface of a long cylinder is maintained at constant temperature. The cylinder does not have any heat source.
The temperature in the cylinder will

Question 12

For designing of a Cam, if is the total rise, is camshaft angle, is total rise angle and the rise motion of the cam is given by a SHM - Simple Harmonic Motion , then the equation for the jerk will be given by

Question 13

In the calculation of induced shear stress in helical springs, the Wahl’s correction factor us used to take care of

Question 14

Which of the following measuring device is used to measure cutting force.

Question 15

Torque transmitting capacity of clutch can be increased by (assume uniform wear theory):

Question 16

The equation of velocity of follower which is starting from rest and have a constant acceleration is given by:

Question 17

The temperature to which air must be cooled at constant pressure in order to become saturated is the

Question 18

Which one of the following is the correct chronological sequence in the follower motion of Cams in the descending order of maximum velocity (in respect to angle of stroke, speed, lift)?
1. Cycloidal motion.
2. Simple Harmonic motion.
3. Uniform velocity motion.

Question 19

The bar of a boring machine is 45 mm in diameter. During operation, the bar may be twisted through 0.01 radians and subjected to a shear stress of 45 MPa. What is the required length of the bar?

Question 20

A governor has a displacement of sleeve 5 cm and force required to raise the sleeve is 7.66 N. So the work done at the sleeve of the governor is _________.
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