RCFL MT Mechanical Mock Test - 3 - Mechanical Engineering MCQ

The angle of inclination of the plane at which the body begins to move down the plane, is called angle of repose.

Main parts of Lathe:

Or the 'GO' condition,

Given dimension of hole =

base size of hole = 40 mm

upper limit of hole = 40 + 0.06 = 40.06 mm

lower limit of hole = 40 + 0.02 = 40.02 mm

So MML for hole = lower limit of hole

= 40 + 0.02 = 40.02;mm

and 'NO GO' condition or minimum material limit or the upper limit of hole = 40.06 mm

The temperature at which a given material is completely recrystallised in an hour is defined as the recrystallisation temperature.

The recrystallisation temperature is low if the degree of deformation is high and if the temperature of deformation is low, and/or if the initial grain size is small. The recrystallisation temperature is also very sensitive to the purity of the material.

According to Newton’s law of viscosity, τ = μ(du/dy) the shear stress is directly proportional to the rate of shear strain or rate of angular deformation of a fluid particle.

τ = μ(du/dy)

Calculation:

u = (y - y2)

du/dy = 1−2y

at y = 0.15

du/dy = 1−2(0.15) = 0.70

τ = μ(du/dy) = 0.8 × 0.7 = 0.56;N/m²

Note: 1 poise = 0.1 Ns/m²

There are three important inversions of the double slider crank chain.

1) Elliptical trammel

2) Scotch yoke mechanism

3) Oldham‘s Coupling

A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1600 KPa. The working fluid is a mixture of air with 20% of carbon monoxide (CO). The mixture enters the compressor at 40^oC at a rate of 850 m3/min and leaves the turbine at 650^oC.

For the manufacturing of railway tracks, stainless steel is used & it is manufactured using I-section hot rolling, as shown below.

In the process of hot-working, the plasticity of rail components increases, and its tendency to fracture decreases.

F is the frictional force developed, and N is the normal reaction.

The direction of resultant R measured from the direction of N is specified by tan θ = F/N

μ = tanθ = F/N

Here F = R sin θ

N = R cos θ

Where θ is angle of friction.

F = ma

F + (-ma) = 0

We can say that the body is in equilibrium under the action of external forces (F) and inertial force (-ma).

This is D’Alembert’s principle which states that a moving body can be brought to equilibrium by adding inertia force Fi to the system.

In magnitude, this inertia force is equal to the product of mass and acceleration and takes place in a direction opposite to that of acceleration.

F_AB = W cosec θ

F_BC = F_AB cos θ = W cosec θ × cos θ

F_BC = = W cot θ

Let us first learn the meanings of the given words:

Reverberate (verb): be repeated several times.

Echo (verb): repeat (someone's words or opinions), typically to express agreement.

Resonate (verb): to produce or be filled with clear, continuing sound.

The idea here is to express that the end of FTX is a continuous topic of discussion, thus all the options are apt contextually and grammatically.

Hence, the correct answer is option C.

Insinuate means suggest or hint (something bad) in an indirect and unpleasant way
Some insinuate that he doesn't love India enough to defend it wholeheartedly
It's degrading for people like Romney to insinuate that they don't contribute

Use structure “subject + auxiliary + past participle + by + object”
As per the given above sentence is given in Passive Voice.
This club was established in 2000.
Hence , option D will be correct answer .

The fact that ‘domestic cats defend their territories’ holds the context of the sentence. In this regard, only the word ‘territorial’ fits in the blank correctly.
This eliminates all other options.
Meanings of the given words:
Territorial (adjective): relating to the ownership of an area.
Timid (adjective): showing a lack of courage or confidence; easily frightened.
Social (adjective): relating to society or its organization.
So, the correct option is C. 

Since A, B and C are the angles of a Δ,
∴ A + B + C = 180° .................... (1)
According to question,
A – B = 15° ;
⇒ A = B + 15°...................(2)
B – C = 30°;
⇒ B = C + 30°;....................(3)
Put the value of B from equation (2) in Equation (1), we will get
∴ A = B + 15°
A = C + 30° + 15°
A = C + 45° ......................(4)
From a equation,
∴ A + B + C = 180°
⇒ (C + 45°) + (C + 30°) + C = 180°
⇒ 3C + 45° + 30° = 180°
⇒ 3C = 180° – 75° = 105°
⇒ C = 35° ...........................(5)
From equation (4)
A = C + 45°
Put the value of C from equation (5) , we will get
∴ ∠A = 35° + 45° = 80°.

CD || AB (Given)
Produce RQ to meet AB in S
∠CRS = ∠PSR (at. int. ∠s)
But ∠CRS = 55°
∴ ∠PSR = 55°
Now in QSP
∠QSP + ∠QPS + ∠PQS = 180°
55° + 38° + ∠SQP = 180°
∴ ∠SQP = 180° – 93° = 87°
But angle a and ∠PQS are linear
∠a = 180° – 87°
∠a = 93°

From Statement I: From this statement, we get the following table,

So, we get that 3 persons are born between L and G.

Clearly, data in statement I alone is sufficient to answer the question.

From Statement I: From this statement, we get the following table,

Clearly, data in statement II alone is not sufficient to answer the question as in both cases, two different answers are there. So we can't exactly say which case is correct as per statement II.

Hence, option A is the correct answer.

‘Knife’ is related to ‘Cut’, means we use knife for cutting.

Similarly,

We use pen for writing.

Hence, Write is the correct answer.

Given:

Man rows 24 km in upstream and 40 km in downstream and takes 8 hours in each

Formula used:

Speed = Distance/Time

y = ½ (u - v); where, u is speed of rowing downstream, v is speed of rowing upstream and y is speed of stream

Calculation:

Downstream speed = u = 40/8 = 5 kmph

Upstream speed = v = 24/8 = 3 kmph

The logic follows here is:-

From The Statement

Parrot is a bird, but 'parrot' is called 'rat'. So 'rat' is a bird.

Hence "rat" is the correct answer.

From the common explanation, we get the position of O is 3rd to the left of M.

Hence, Option B is correct.

Final Arrangement:

Common Explanation:

References:

J sits fourth to the right of O and N sits second to the left of J.

Only H sits between J and G.

Inferences:

From the above references, we get

References:

Only D sits between G and C

G is not an immediate neighbour of J but fifth to the right of I.

M, who sits exactly in the middle, is second to the right of I.

Five persons sit between L and J.

Inferences:

From the above references, we get

References:

E is not an immediate neighbour of N.

Inferences:

From the above reference, we get the final arrangement:

G. Sathiyan made history by winning the men's singles trophy at the WTT Feeder Beirut 2024 event, becoming the first Indian to achieve this feat in a World Table Tennis Feeder Series tournament. This victory showcased his exceptional skills and talent in table tennis on the international stage.

The correct answer is 'Guru Ram Das'.

Key Points

• Amritsar was founded by Shri Guru Ram Das ji, the fourth guru of the Sikhs in about 1574 A.D.
• Before the city was founded, the area was covered with thick forests and had several lakes.
• The construction of Amrit Sarovar from which the city gets its present name was also started by Shri Guru Ram Das.
• His successor, Shri Guru Arjan Dev, completed the project and located the Harmandir Sahib in its midst.
• Maharaja Ranjit Singh took over full control of Amritsar by 1802 A.D.

Important Points

The correct option is A.
Early in the eighteenth century two ministers Nanjaraj (the Sarvadhikari) and Devraj (the Dulwai) had seized power in Mysore reducing the king Chikka Krishna Raj to a mere puppet.