Explanation

All figures have the circle, triangle, and horizontal and vertical lines in pairs

except for figure "d"  

Explanation

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.

we highlight the missing letter with a red color 

Explanation

• Run, Walk, Skip → all are continuous forward movement (locomotion on ground)
• Jump → vertical/air movement, not continuous ground travel movement

✔ So, Jump is the odd one out.

Explanation

1 x  1 + 1 = 2

2 x 2 + 2 = 6

3 x 3 + 3 = 12 

4 x 4 + 4 = 20 

5 x 5 + 5 = 30 

6 x 6 + 6 = 42

Explanation

The roadway would cause diffuse reflection due to its rough surface

some examples where diffused reflection

• Desert sand,
• disturbed water surface,
• and rough roads  
  

Explanation

Water body work is to cool engine.

Water of radiator circulate all side of engine just to keep cool.

Explanation

A shaft is a rotating machine element that is used to transmit power from one place to another. 

Explanation

There are two types of valves in an engine cylinder:

1. Inlet Valve 
2. Exhaust Valve.
   

Explanation

3 Piston rings as follows:

• 1st piston ring:

compression of combustion air or gas mixture and the resulting gas pressure in the combustion cycle, transfer of generated heat to the cylinder surface

• 2nd piston ring:

support of the remaining gas pressure due to blow-by past the 1st piston ring

• 3rd piston ring:

scraping of oil 

Explanation

car axles are part of the system that takes the engine's power to turn the wheels and propel the car

Axles are essential components of any vehicle and

three main types:

1. front
2. rear
3. stub