Home
Current Affairs January 2024

What is the correct answer?

4

In the below figure, the plastic range occurs

A. Before point A

B. Beyond point A

C. Between points A and D

D. Between points D and E

Correct Answer :

B. Beyond point A


Related Questions

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

One molecule of oxygen consists of __________ atoms of oxygen.

A. 2

B. 4

C. 8

D. 16

What is the correct answer?

4

For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

A. Dual cycle, Diesel cycle, Otto cycle

B. Otto cycle, Diesel cycle, Dual cycle

C. Dual cycle, Otto cycle, Diesel cycle

D. Diesel cycle, Otto cycle, Dual cycle

What is the correct answer?

4

The efficiency of Joule cycle is

A. Greater than Carnot cycle

B. Less than Carnot cycle

C. Equal to Carnot cycle

D. None of these

What is the correct answer?

4

The main cause for the irreversibility is

A. Mechanical and fluid friction

B. Unrestricted expansion

C. Heat transfer with a finite temperature difference

D. All of the above

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 compression ratio for Diesel engines is

A. 3 to 6

B. 5 to 8

C. 15 to 20

D. 20 to 30

What is the correct answer?

4

The gas turbine cycle with regenerator improves

A. Thermal efficiency

B. Work ratio

C. Avoids pollution

D. None of these

What is the correct answer?

4

The compression ratio for petrol engines is

A. 3 to 6

B. 5 to 8

C. 10 to 20

D. 15 to 30

What is the correct answer?

4

Elasticity of Mild Steel specimen is defined by

A. Hookes law

B. Yield point

C. Plastic flow

D. Proof stress

What is the correct answer?

4

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

A. Kh > Ks

B. Kh < Ks

C. Kh = Ks

D. None of these

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

Carnot cycle has maximum efficiency for

A. Petrol engine

B. Diesel engine

C. Reversible engine

D. Irreversible engine

What is the correct answer?

4

Slenderness of a column is zero when

A. Ends are firmly fixed

B. Column is supported on all sides throughout the length

C. Length is equal to radius of gyration

D. Length is twice the radius of gyration

What is the correct answer?

4

The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is __________ at the fixed end.

A. wl/4

B. wl/2

C. wl

D. wl²/2

What is the correct answer?

4

A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

A. 30 kJ

B. 54 kJ

C. 84 kJ

D. 114 kJ

What is the correct answer?

4

According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.

A. First kind

B. Second kind

C. Third kind

D. None of these

What is the correct answer?

4

A definite area or a space where some thermodynamic process takes place is known as

A. Thermodynamic system

B. Thermodynamic cycle

C. Thermodynamic process

D. Thermodynamic law

What is the correct answer?

4

When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from the neutral axis.

A. Equal to

B. Directly proportional to

C. Inversely proportional to

D. Independent of

What is the correct answer?

4

The shear force diagram of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length will be

A. A right angled triangle

B. An isosceles triangle

C. An equilateral triangle

D. A rectangle

What is the correct answer?

4

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

A. Tensile stress

B. Compressive stress

C. Shear stress

D. Thermal stress

What is the correct answer?

4

The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents

A. Heat absorbed

B. Heat rejected

C. Either (A) or (B)

D. None of these

What is the correct answer?

4

A bar of copper and steel form a composite system, which is heated to a temperature of 40°C. The stress induced in the copper bar will be

A. Tensile

B. Compressive

C. Shear

D. Zero

What is the correct answer?

4

In a free expansion process,

A. W1 - 2 = 0

B. Q1 - 2 = 0

C. dU = 0

D. All of these

What is the correct answer?

4

In the below figure, curve D represents_________.

A. Mild steel

B. Cast iron

C. Concrete

D. Bone of these

What is the correct answer?

4

When a body is subjected to biaxial stress i.e. direct stresses (σx) and (σy) in two mutually perpendicular planes accompanied by a simple shear stress (τxy), then maximum normal stress is

A. x + σy)/2 + (1/2) × √[(σx - σy)² + 4 τ²xy]

B. x + σy)/2 - (1/2) × √[(σx - σy)² + 4 τ²xy]

C. x - σy)/2 + (1/2) × √[(σx + σy)² + 4 τ²xy]

D. x - σy)/2 - (1/2) × √[(σx + σy)² + 4 τ²xy]

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

What is the correct answer?

4

The ultimate analysis of coal consists of the determination of the percentage of

A. Carbon

B. Hydrogen and nitrogen

C. Sulphur and ash

D. All of these

What is the correct answer?

4

According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.

A. Equal to

B. Less than

C. More than

D. None of these

What is the correct answer?

4

Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

A. Combustion is at constant volume

B. Expansion and compression are isentropic

C. Maximum temperature is higher

D. Heat rejection is lower