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
Correct Answer :
C. Diamond riveting
Related Questions
The polytropic index (n) is given by
log (p1p2)/log (v1v2)
log (p2/ p1)/log (v1/ v2)
log (v1/ v2)/ log (p1/p2)
log [(p1v1)/(p2v2)]
The layer at the centre of gravity of the beam as shown in the below figure, will be
In tension
In compression
Neither in tension nor in compression
None of these
The main cause for the irreversibility is
Mechanical and fluid friction
Unrestricted expansion
Heat transfer with a finite temperature difference
All of the above
In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called
Shear modulus
Section modulus
Polar modulus
None of these
According to Avogadro's law
The product of the gas constant and the molecular mass of an ideal gas is constant
The sum of partial pressure of the mixture of two gases is sum of the two
Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules
All of the above
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
Kelvin Planck's law
A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
Carnot cycle
Stirling cycle
Otto cycle
Diesel cycle
When the gas is heated at constant pressure, the heat supplied
Increases the internal energy of the gas
Increases the temperature of the gas
Does some external work during expansion
Both (B) and (C)
The efficiency of Ericsson cycle is __________ Carnot cycle.
Greater than
Less than
Equal to
None of these
The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that
Carnot cycle can't work with saturated steam
Heat is supplied to water at temperature below the maximum temperature of the cycle
A Rankine cycle receives heat at two places
Rankine cycle is hypothetical
In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be
Increase key length
Increase key depth
Increase key width
Double all the dimensions
One molecule of oxygen consists of __________ atoms of oxygen.
2
4
8
16
The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is
2/3
3/4
1
9/8
The heating of gas at constant volume is governed by
Boyle's law
Charles' law
Gay-Lussac law
Avogadro's law
The mass of carbon per kg of flue gas is given by
(11/3) CO2 + (3/7) CO
(3/7) CO2 + (11/3) CO
(7/3) CO2 + (3/11) CO
(3/11) CO2 + (7/3) CO
The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as
Dual combustion cycle
Diesel cycle
Atkinson cycle
Rankine cycle
One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
9/7
11/7
7/4
1/4
The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is
Same
Double
Half
Four times
The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
Boyle's law
Charle's law
Gay-Lussac law
Joule's law
When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called
Wood charcoal
Bituminous coal
Briquetted coal
None of these
When shear force at a point is zero, then bending moment is _________ at that point.
Zero
Minimum
Maximum
Infinity
A composite bar made up of steel and copper bars of equal lengths are heated through 100°C. The stresses developed shall be
Tensile in both the material
Tensile in steel and compressive in copper
Compressive in steel and tensile in copper
Compressive in both the materials
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
The section modulus of a circular section about an axis through its C.G., is
πd²/4
πd²/16
πd3/16
πd3/32
The property of a material by virtue of which it can be beaten or rolled into plates is called
Malleability
Ductility
Plasticity
Elasticity
The ratio of lateral strain to the linear strain within elastic limit is known as
Young's modulus
Bulk modulus
Modulus of rigidity
Poisson's ratio
In an extensive property of a thermodynamic system
Extensive heat is transferred
Extensive work is done
Extensive energy is utilised
None of these
The gas constant (R) is equal to the __________ of two specific heats.
Sum
Difference
Product
Ratio
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)
Which of the following is an intensive property of a thermodynamic system?
Volume
Temperature
Mass
Energy