# For the following "Matching" exercise, choose the correct one from among the alternatives A, B, C, and D.   Group 1   Group 2 1. Marne Diesel Engine a) Two stroke engine 2. Air conditioning b) Four stroke engine 3. Steam Power Plant c) Rotary engine 4. Gas Turbine Power Plant d) Cooling and dehumidification     e) Cooling tower     f) Brayton cycle     g) Rankne cycle     h) D-slide valve

1.  1-b 2-e 3-f 4-h

2.  1-c 2-f 3-e 4-g

3.  1-c2-f3-g4-e

4.   1-a 2-d 3-g 4-f

4

1-a 2-d 3-g 4-f

Explanation :
No Explanation available for this question

# An automobile of weight W is shown in Fig.2.13. A pull ‘P' is applied as shown. The reaction at the front wheels (location A) is

1.  (W/2)-(Pb/2a)

2.  (W/2)+(Pb/2a)

3.  (W/2)-(Pb/2b)

4.  W/2

4

(W/2)+(Pb/2a)

Explanation :
No Explanation available for this question

# A simply supported beam carries a load 'P' through a bracket, as shown in Fig.2.14. The maximum bending moment in the beam is

1.  PI/2

2.  (PI/2)+(aP/2)

3.  ( PI/2)  + aP

4.  ( PI/2)  - aP

4

( PI/2)  + aP

Explanation :
No Explanation available for this question

# In an experiment to find the velocity and acceleration of a particular cam rotating at 10 rad/s, the values of displacements and velocities are recorded. The slope of displacement curve at an angle of '0' is 1.5 m/s and the slope of velocity curve at the same angle is -0.5 m/s2. The velocity and acceleration of the cam at the instant are respectively.

1.  15 m/s and -5 m/s2

2.  15 m/s and 5 m/s2

3.  1.2 m/s and -0.5 m/s2

4.  1.2 m/s and 0.5 m/s2

4

15 m/s and -5 m/s2

Explanation :
No Explanation available for this question

# a mass of 100 kg is held between two springs. The natural frequency of vibration of the system, in cycles/s, is

1.  1/2π

2.  5/π

3.  10/ π

4.   20/π

4

10/ π

Explanation :
No Explanation available for this question

# The life of a ball bearing at a load of 10 kN is 8000 hours. Its life in hours, if the load is increased to 20 kN, keeping all other conditions the same, is

1.   4000

2.  2000

3.  1000

4.  500

4

1000

Explanation :
No Explanation available for this question

# A fit is specified as 25 H8/e8. The tolerance value for a nominal diameter of 25 mm in IT8 is 33 microns and fundamental deviation for the shaft is -40 microns. The maximum clearance of the fit in microns is

1.  -7

2.  7

3.  73

4.  106

4

106

Explanation :
No Explanation available for this question

# A 1.5 mm thick sheet is subject to unequal biaxial stretching and the true strains in the directions of stretching are 0.05 and 0.09. The final thickness of the sheet in mm is

1.  1.414

2.  1.304

3.  1.362

4.   289

4

1.414

Explanation :
No Explanation available for this question

# From an equilateral triangular plate of side ‘F', a square plate of maximum size has to be cut. The side of such a square plate is:

1.  √3a/2

2.  (2+√3)a/4

3.  (1+√3)a/8

4.  √3a/(2+√3)

4

√3a/(2+√3)

Explanation :
No Explanation available for this question

# The stress-strain behavior of a material is shown in Fig.2.2l. Its resilience and toughness, in Nm/m3, are respectively

1.  28x104,76x104

2.  28x104,48x104

3.  14x104,90x104

4.  76x 104,104x 104

4