HPCL Mechanical Engineer Mock Test - 2 - Mechanical Engineering MCQ

The given sentence in active voice is: "Ads on TV increase the sale of any commodity."

The correct transformation of this sentence into the passive voice is: "The sale of any commodity is increased by ads on TV."

Therefore, the correct answer is option B: "The sale of any commodity is increased by ads on TV."

• Lament has two meanings out of which one is 'to complain'.
• Meaning of Complaint: a statement that something is unsatisfactory or unacceptable
• Meaning of Comment: a verbal or written remark expressing an opinion or reaction
• Meaning of Condone: accept (behaviour that is considered morally wrong or offensive)
• Meaning of Console: comfort (someone) at a time of grief or disappointment

For number less than 1, if there are n zeroes after the decimal point, then the characteristics of that number will be −(n+1).

and For number  greater than 1, if  there are n number of zeroes are on the left sides of the digits then characteristics will be (n+1).

Hence, C is the correct option.

Hence, Option B is correct.

r% of r = 49
r² = 49 × 100
r = 7 × 10 = 70
Hence, Option B is correct.

Remainder,

[We have taken individual remainder, which means if 73 is divided by 34 individually, it will give remainder 5, 75 divided 34 gives remainder 7 and so on.]

[We have taken here negative as well as positive remainder at the same time. When 30 divided by 34 it will give either positive remainder 30 or negative remainder -4. We can use any one of negative or positive remainder at any time.]

Required remainder = 32.

Hence, Option A is correct.

Since pyramid has length ,width and height so it will be 3D

d = -4, n = 7, a(n) = 4
a(n) = a + (n – 1) x d
a + (7 – 1) x (-4) = 4
a + 6 x (-4) = 4
a – 24 = 4
a = 4 + 24
a = 28

Pipe Q alone can fill the tank in

Hence, Option D is correct.

The logic followed is:

Abduct and Kidnap are synonyms.

Similarly,

Fierce and Violent are synonyms.

Hence, the correct answer is "Violent".

U is the mother of P and R is the brother of P. So, U is mother of R.

The first pair shows two states of matter and the second pair gives examples of those states

Given:

No of possible outcomes when two dice are thrown simultaneously: 6 × 6 = 36 

(1,1), (1, 2), (1, 3),  (1, 4), (1, 5), (1, 6) 

(2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6) 

(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6) 

(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6)

(5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6)

(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6)

Formula used:

Probability = No of favorable outcome ÷ No of total outcomes 

Calculation:

No of outcome with sum 12 (6, 6) = 1

∴ Required probability = 1/36 

Baseball is like volleyball, Hockey and Football.

From the final arrangement, we get T faces Q.
Hence, Option C is correct.
References:
Q sits second to the right of P.
Inferences:
From the above reference, we get two different cases:
In case 1, P sits at the corner or in the middle of the side of the table.

References:
R is not an immediate neighbor of P.
R faces inside.
R sits third to the left of W.
Inferences:
From the above references, we get different cases for R, in case 1(a) in which R faces P and in case 1(b) R faces Q.

References:
T sits third to the left of U.
V sits second to the left of U.
Inferences:
So, from this case 1(b) and case 2 will be eliminated as there is no possible place for V in these cases after placing U and T. Hence, we get our final arrangement in which S sits on the immediate left of P and V sits on the immediate right of R.
Final arrangement:

From the common explanation, we can say that H sits 3rd to the left of the one who sits opposite to D.

Hence, Option B is correct.

Common Explanation:

References:

One person sits between A and C, who sits second to the right of H.

G sits opposite to B.

Both G and B do not sit immediate left of H.

Inferences:

From the above reference, we get two different cases:

References:

D sits second to the left of B.

A doesn’t sit beside D.

E doesn’t face C.

Inferences:

From the above reference, case 1 will be eliminated because A doesn’t sit beside of D.

So, the final arrangement:

1st term = 3
2nd term = 3 + 9 = 12
3rd term = 12 + 15 = 27
4th term = 27 + 21 = 48
5th term = 48 + 27 = 75
6th term = 75 + 33 = 108

Thus, the missing term is 7th term = 103 + 39 = 147

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

C A _  C _

C E _ C _

C I _ C _

C O _ C _

C U _ C _

Clearly, Statement I alone is not sufficient to answer the question.

From Statement II: From this statement, we get the following inference:

We understand that only one letter is between T and H and either A or E is the only vowel used in the word but we cannot form the whole word.

Clearly, Statement II alone is not sufficient to answer the question.

Checking both Statement, I and II together:

C A T C H     C A H C T        C E T C H       C E H C T

Here, only ‘CATCH’ is the meaningful word that can be formed.

Hence, option E is the correct answer.

Answer : The word that is different from the rest is: B: Swan
Reasons:
- Size: Swans are significantly larger than sparrows, parrots, and koels.
- Habitat: While the other birds (sparrow, parrot, and koel) are primarily found in various terrestrial environments, swans are mainly found in aquatic habitats such as lakes, ponds, and rivers.
- Behavior: Swans are known for their elegance and unique mating rituals (such as the famous "swan dance"), which are not seen in the other mentioned birds.
- Body Structure: Swans have long, curved necks, and their bodies are streamlined for swimming, whereas the other birds have shorter necks and are primarily adapted for perching or flying.Swan is the only water bird in the group.

As short form of 'Mountain' is 'Hill' similarly 'Tank' is short form of 'River'.

Flat-faced or mushroom follower: When the contacting end of the follower is a perfectly flat face, it is called a flat-faced follower.

Knife edge follower: When the contacting end of the follower has a sharp knife edge, it is called a knife-edge follower.

(a) Knife edged, (b) Roller Follower, (c) Flat or Mushroom Follower (d) Spherical faced Follower

Reynolds;Number = Inertia;force/Viscous;force

Froude;Number = Inertia;force/Gravity;force

Weber;Number = Inertia;force/Surface;tension;force

Reaction Turbine: If at the inlet of the turbine, the water possesses kinetic energy and pressure energy, the turbine is known as a reaction turbine. e.g., e Francis and Kaplan turbine.

Tangential flow turbines: In this type of turbine, the water strikes the runner in the tangent direction to the wheel. Example: Pelton wheel turbine

Radial flow turbines: In this type of turbine, the water strikes in the radial direction. accordingly, it is further classified as

• Inward flow turbine: The flow is inward from periphery to the centre (centripetal type); Example: old Francis turbine

• Outward flow turbine: The flow is outward from the centre to periphery (centrifugal type); Example: Fourneyron turbine

Axial flow turbine: The flow of water is in the direction parallel to the shaft axis. Example: Kaplan turbine and propeller turbine

∴ Francis turbine is a radial inward flowing reaction turbine.

△Q1 =100k Trang≤W1=50kj

△Q2=120kjW2=?

The given process is a cyclic process Hence △U=0

⇒△Q1+△Q₂=△W₁+△W₂

100+120=50+△W₂

△W₂ = 170kj

Pump rotation should always be viewed from the shaft end. If the pump is rotated in the wrong direction, adequate fluid will not fill the suction port due to the pump's internal design. of a variable displacement pump.

• Sherardizing (Zinc coating)

• Calorizing (Aluminium coating)

• Chromizing (Chromium coating)

Anodizing: Anodizing is to provide a decorative and corrosion-resistant coating on aluminium and its alloys only.

A thin coating of oxide on aluminium can protect the surface from corrosion.

Aluminium is ideally suited to anodizing, although other non-ferrous metals such as magnesium and titanium also can be anodized.

Parkerising is a process used for making thin phosphate coating on steel.

Galvanizing: It is a process of giving a protective coating of zinc on iron sheets and components to protect the surface from corrosion. It is the process of coating of zinc by hot-dipping.

In a bending beam, a point is known as a point of contra flexure if it is a location at which no bending occurs. In a bending moment diagram, it is the point at which the bending moment curve intersects with the zero line. In other words, where the bending moment changes its sign from negative to positive or vice versa. It occurs in the overhanging beam.