Home
Current Affairs January 2024

What is the correct answer?

4

Diesel cycle consists of following four processes

A. Two isothermal and two isentropic

B. Two isentropic and two constant volumes

C. Two isentropic, one constant volume and one constant pressure

D. Two isentropic and two constant pressures

Correct Answer :

C. Two isentropic, one constant volume and one constant pressure


Related Questions

What is the correct answer?

4

Reversed joule cycle is called

A. Carnot cycle

B. Rankine cycle

C. Brayton cycle

D. Bell Coleman cycle

What is the correct answer?

4

The absolute zero pressure can be attained at a temperature of

A. 0°C

B. 273°C

C. 273 K

D. None of these

What is the correct answer?

4

The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

A. 2/3

B. 3/4

C. 1

D. 9/8

What is the correct answer?

4

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

A. One right angled triangle

B. Two right angled triangles

C. One equilateral triangle

D. Two equilateral triangles

What is the correct answer?

4

The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is

A. Same

B. Twice

C. Four times

D. Eight times

What is the correct answer?

4

One kg of carbon monoxide requires _______kg of oxygen to produce 11/7 kg of carbon dioxide gas.

A. 11/7

B. 9/7

C. 4/7

D. All of the above

What is the correct answer?

4

Kerosene is distilled at

A. 65° to 220°C

B. 220° to 345°C

C. 345° to 470°C

D. 470° to 550°C

What is the correct answer?

4

Young's modulus is defined as the ratio of

A. Volumetric stress and volumetric strain

B. Lateral stress and lateral strain

C. Longitudinal stress and longitudinal strain

D. Shear stress to shear strain

What is the correct answer?

4

The fuel mostly used in blast furnace for extracting pig iron from iron ores is

A. Hard coke

B. Soft coke

C. Pulverised coal

D. Bituminous coal

What is the correct answer?

4

Coke is produced

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

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

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

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

What is the correct answer?

4

The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as

A. Element

B. Compound

C. Atom

D. Molecule

What is the correct answer?

4

Percentage reduction of area in performing tensile test on cast iron may be of the order of

A. 50 %

B. 25 %

C. 0 %

D. 15 %

What is the correct answer?

4

The efficiency and work ratio of a simple gas turbine cycle are

A. Very low

B. Low

C. High

D. Very high

What is the correct answer?

4

In S. I. units, the value of the universal gas constant is

A. 8.314 J/kg mole-K

B. 83.14 J/kgmole-K

C. 831.4 J/kgmole-K

D. 8314 J/kgmole-K

What is the correct answer?

4

The strain energy stored in a solid circular shaft subjected to shear stress (τ), is: (Where G = Modulus of rigidity for the shaft material)

A. τ²/ 2G × Volume of shaft

B. τ/ 2G × Volume of shaft

C. τ²/ 4G × Volume of shaft

D. τ/ 4G × Volume of shaft

What is the correct answer?

4

If Th is the torque resisting capacity of a hollow shaft and Ts is that of a solid shaft, of the same material, length and weight. Then,

A. Th > Ts

B. Th < Ts

C. Th = Ts

D. None of these

What is the correct answer?

4

The stress developed in a material at breaking point in extension is called

A. Breaking stress

B. Fracture stress

C. Yield point stress

D. Ultimate tensile stress

What is the correct answer?

4

In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called

A. Shear modulus

B. Section modulus

C. Polar modulus

D. None of these

What is the correct answer?

4

For the same maximum pressure and temperature,

A. Otto cycle is more efficient than Diesel cycle

B. Diesel cycle is more efficient than Otto cycle

C. Dual cycle is more efficient than Otto and Diesel cycles

D. Dual cycle is less efficient than Otto and Diesel cycles

What is the correct answer?

4

When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress occurs at a section inclined at __________ to the normal of the section.

A.

B. 30°

C. 45°

D. 90°

What is the correct answer?

4

A column is said to be a short column, when

A. Its length is very small

B. Its cross-sectional area is small

C. The ratio of its length to the least radius of gyration is less than 80

D. The ratio of its length to the least radius of gyration is more than 80

What is the correct answer?

4

The value of cp/cv for air is

A. 1

B. 1.4

C. 1.45

D. 2.3

What is the correct answer?

4

Formula based on IS codes is based on

A. Straight line formula

B. Eulers formula

C. Rankines formula

D. Secant formula

What is the correct answer?

4

An adiabatic process is one in which

A. No heat enters or leaves the gas

B. The temperature of the gas changes

C. The change in internal energy is equal to the mechanical workdone

D. All of the above

What is the correct answer?

4

The deformation per unit length is called

A. Tensile stress

B. Compressive stress

C. Shear stress

D. Strain

What is the correct answer?

4

The isothermal and adiabatic processes are regarded as

A. Reversible process

B. Irreversible process

C. Reversible or irreversible process

D. None of these

What is the correct answer?

4

The efficiency and work ratio of a simple gas turbine cycle are

A. Low

B. Very low

C. High

D. Very high

What is the correct answer?

4

The materials which exhibit the same elastic properties in all directions are called

A. Homogeneous

B. Inelastic

C. Isotropic

D. Isentropic

What is the correct answer?

4

The ultimate tensile stress of mild steel compared to ultimate compressive stress is

A. Same

B. More

C. Less

D. Unpredictable

What is the correct answer?

4

The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

A. 0.224 litres

B. 2.24 litres

C. 22.4 litres

D. 224 litres