4

Same as

Less than

Greater than

None of these

B. Less than

4

# Modulus of rigidity may be defined as the ratio of

Linear stress to lateral strain

Lateral strain to linear strain

Linear stress to linear strain

Shear stress to shear strain

4

# The throttling process is __________ process.

Reversible

Irreversible

Reversible or irreversible

None of these

4

# Which of the following is correct?

Absolute pressure = Gauge pressure + Atmospheric pressure

Gauge pressure = Absolute pressure + Atmospheric pressure

Atmospheric pressure = Absolute pressure + Gauge pressure

Absolute pressure = Gauge pressure - Atmospheric pressure

4

3 to 6

5 to 8

15 to 20

20 to 30

4

Isothermally

Isentropically

Polytropically

None of these

4

Same

Twice

Four times

Eight times

4

Oxygen

Sulphur

Nitrogen

Carbon

4

# The gas in cooling chamber of a closed cycle gas turbine is cooled at

Constant volume

Constant temperature

Constant pressure

None of these

4

12

14

16

32

4

mR (T2 - T1)

mcv (T2 - T1)

mcp (T2 - T1)

mcp (T2 + T1)

4

# The weakest section of a diamond riveting is the section which passes through

The first row

The second row

The central row

One rivet hole of the end row

4

Carnot cycle

Otto cycle

Joule's cycle

Stirling cycle

4

Elastic limit

Yield stress

Ultimate stress

Breaking stress

4

π /4 × τ × D³

π /16 × τ × D³

π /32 × τ × D³

π /64 × τ × D³

4

4 tonnes/ cm²

8 tonnes/ cm²

16 tonnes/ cm²

22 tonnes/ cm²

4

# The efficiency of Diesel cycle with decrease in cut-off

Increases

Decreases

First increases and then decreases

First decreases and then increases

4

# For a perfect gas, according to Boyle's law (where p = Absolute pressure, v = Volume, and T = Absolute temperature)

p v = constant, if T is kept constant

v/T = constant, if p is kept constant

p/T = constant, if v is kept constant

T/p = constant, if v is kept constant

4

# Tensile strength of a material is obtained by dividing the maximum load during the test by the

Area at the time of fracture

Original cross-sectional area

Average of (A) and (B)

Minimum area after fracture

4

# A beam is loaded as cantilever. If the load at the end is increased, the failure will occur

In the middle

At the tip below the load

At the support

Anywhere

4

Middle of bar

Supported end

Bottom end

None of these

4

pv = mRT

pv = RTm

pvm = C

pv = (RT)m

4

# Which of the following is a proper sequence?

Proportional limit, elastic limit, yielding, failure

Elastic limit, proportional limit, yielding, failure

Yielding, proportional limit, elastic limit, failure

None of the above

4

1 - rγ - 1

1 + rγ - 1

1 - (1/ rγ - 1)

1 + (1/ rγ - 1)

4

# In open cycle gas turbine plants

The indirect heat exchanger and cooler is avoided

Direct combustion system is used

A condenser is used

All of the above

4

Coke

Wood charcoal

Bituminous coal

Briquetted coal

4

(p2/p1)γ - 1/ γ

(p1/p2)γ - 1/ γ

(v2/v1)γ - 1/ γ

(v1/v2)γ - 1/ γ

4

Very low

Low

High

Very high

4

More than 50 %

25-50 %

10-25 %

Negligible

4

δl = 4PE/ πl²

δl = 4πld²/PE

δl = 4Pl/πEd₁d₂

δl = 4PlE/ πd₁d₂