Which of the following is insensitive to changes in pressure?

Two involute gears are designed to mesh for a given centre distance and a given angular velocity ratio (other than 1). During assembly, the centre distance has increased slightly. Then which of the following changes occur? (i) Velocity ratio changes (ii) Pressure angle changes (iii) Pitch circle diameter changes (iv) Working depth changes (v) Base circle radius changes Select the correct answer using the code given below.

A

1, 2 and 3

B

2, 3 and 4

C

2 and 5

D

3 and 5

Mundel's classes of change includes
1. Changes in body motions and positions
2. Changes in equipment and working arrangements
3. Changes in production sequence
4. Changes in finished product
5. Changes in raw material

A

1, 2 and 3

B

1, 2, 3 and 4

C

1, 2, 3, 4 and 5

D

None of these

Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a

A

Magnetic flowmeter

B

Pitot tube

C

Flow nozzle type flowmeter

D

Turbine flowmeter

The highest pressure gas of a mixture has partial pressure p, the partial pressure of other gases decreases by factor of 2n-1, the partial pressure of second gases decreases by a factor of 2, partial pressure of third gas increases by 4, and so on, if the total pressure of gas mixture is 31p/16, how many gases are present in the mixture?

A

3

B

5

C

10

If the choice of axes changes for an externally loaded solid material, the correct statements are:
P. The components of stress tensor changes.
Q. The octahedral shear stress does not change.
R. The distortion energy changes.
S. The yield loci in the space of prinicpal stresses do not change.

A

P, Q, S

B

P, R, S

C

P, Q, R

D

Q, R

Maturation refers to . . . . . . . . changes from conception to death.
1. neurophysiological changes
2. bio-chemical changes
Select the correct answer

A

Only 1

B

Only 2

C

Both 1 and 2

D

None of these

What is the absolute pressure experienced by a pressure sensor, if the atmospheric pressure of a fluid is 2 atm, gauge pressure is 5 atm and differential pressure is 3 atm?

A

5 pascal

B

5 Atm

C

7 barye

D

7 Atm

What is the gauge pressure experienced by a pressure sensor, if the atmospheric pressure of a fluid is 1 atm, absolute pressure is 6 atm and differential pressure is 2 atm?

A

5 pascal

B

5 Atm

C

5 barye

D

1 Atm

A student wants to find the absolute pressure of water at a point below the surface of water. He has a barometer and a manometer pressure gauge. The barometer reads 1.3152 bar where as the manometer pressure gauge reads 0.3152 bar. What is the absolute pressure? (Assume that pressure at one end of the manometer is atmospheric.)

A

1 bar

B

1.6304 bar

C

0.3152 bar

D

1.3152 bar

Relative humidity is given by (where p_v = Partial pressure of water vapour, p_b = Barometric pressure, p_s = Pressure of saturated air, p_d = Pressure at dry bulb temperature, p_w = Saturation pressure corresponding to wet bulb temperature and $$\mu $$ = Degree of saturation)

A

$$\frac{{0.622{{\text{p}}_{\text{v}}}}}{{{{\text{p}}_{\text{b}}} - {{\text{p}}_{\text{V}}}}}$$

B

$$\frac{\mu }{{1 - \left( {1 - \mu } \right)\frac{{{{\text{p}}_{\text{s}}}}}{{{{\text{p}}_{\text{b}}}}}}}$$

C

$$\frac{{{{\text{p}}_{\text{v}}}\left( {{{\text{p}}_{\text{b}}} - {{\text{p}}_{\text{d}}}} \right)}}{{{{\text{p}}_{\text{d}}}\left( {{{\text{p}}_{\text{b}}} - {{\text{p}}_{\text{v}}}} \right)}}$$

D

None of these

Which of the following is insensitive to changes in pressure?

Related Questions