4

# If the rivets in adjacent rows are staggered and the outermost row has only one rivets, the arrangement of the rivets is called

Chain riveting

Zigzag riveting

Diamond riveting

Crisscross riveting

C. Diamond riveting

4

# The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of

One right angled triangle

Two right angled triangles

One equilateral triangle

Two equilateral triangles

4

# Coke is produced

When coal is first dried and then crushed to a fine powder by pulverising machine

From the finely ground coal by moulding under pressure with or without a binding material

When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

By heating wood with a limited supply of air to a temperature not less than 280°C

4

# Slenderness of a column is zero when

Ends are firmly fixed

Column is supported on all sides throughout the length

Length is equal to radius of gyration

Length is twice the radius of gyration

4

# A thin cylindrical shell of diameter (D) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to volumetric strain is

(m - 1)/ (2m - 1)

(2m - 1)/ (m - 1)

(m - 2)/ (3m - 4)

(m - 2)/ (5m - 4)

4

0

1

γ

4

Homogeneous

Inelastic

Isotropic

Isentropic

4

Rubber

Plastic

Brass

Steel

4

# Carnot cycle consists of

Two constant volume and two isentropic processes

Two isothermal and two isentropic processes

Two constant pressure and two isentropic processes

One constant volume, one constant pressure and two isentropic processes

4

# A shaft revolving at ω rad/s transmits torque (T) in Nm. The power developed is

T.ω watts

2π. T.ω watts

2π. T.ω/75 watts

2π. T.ω/4500 watts

4

# The specific heat at constant volume is

The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure

The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume

The amount of heat required to raise the temperature of 1 kg of water through one degree

Any one of the above

4

Wl3 / 48EI

5Wl3 / 384EI

Wl3 / 392EI

Wl3 / 384EI

4

# High air-fuel ratio in gas turbines

Increases power output

Improves thermal efficiency

Reduces exhaust temperature

4

πd²/4

πd²/16

πd3/16

πd3/32

4

# The deformation per unit length is called

Tensile stress

Compressive stress

Shear stress

Strain

4

2

4

8

16

4

# When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is

Tensile stress

Compressive stress

Shear stress

Thermal stress

4

0.287 J/kgK

2.87 J/kgK

28.7 J/kgK

287 J/kgK

4

Same

Double

Half

Four times

4

# The variables which control the physical properties of a perfect gas are

Pressure exerted by the gas

Volume occupied by the gas

Temperature of the gas

All of these

4

# First law of thermodynamics deals with

Conservation of heat

Conservation of momentum

Conservation of mass

Conservation of energy

4

1 kg of water

7 kg of water

8 kg of water

9 kg of water

4

# When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the maximum normal stress i

(σx/2) + (1/2) × √(σx² + 4 τ²xy)

(σx/2) - (1/2) × √(σx² + 4 τ²xy)

(σx/2) + (1/2) × √(σx² - 4 τ²xy)

(1/2) × √(σx² + 4 τ²xy)

4

Zero

Minimum

Maximum

Positive

4

# Otto cycle is also known as

Constant pressure cycle

Constant volume cycle

Constant temperature cycle

Constant temperature and pressure cycle

4

23.97 bar

25 bar

26.03 bar

34.81 bar

4

Th > Ts

Th < Ts

Th = Ts

None of these

4

Kh > Ks

Kh < Ks

Kh = Ks

None of these

4

# Principal planes are planes having

Maximum shear stress

No shear stress

Minimum shear stress

None of the above

4

Heat

Work

Internal energy

Entropy