mechanical quiz 1

mechanical quiz 1

Hello guys, Here is a mechanical quiz 1 for you and also you can grade up your knowledge so let's start guys

1. A cycle consisting of one constant pressure, one constant volume and two isentropic processes is k

Carnot cycle
Stirling cycle
Otto cycle
Otto cycle


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

low
very low
high
very high

top 25 mechanical engineering interview questions & answers

1. Explain the reason that why big tyres are used in rear of vehicles.

1. Large tyres provide larger surface area touching the ground, thus providing the more pulling power. Basically tractors have larger rear tyres because tractors don’t have to operate at higher speeds, thus getting the same ground speed with larger tyres. Moreover gear ratios don’t have to be as high as b/c of the tyres.

2. Explain the reason that why the tyres are always black in colour. Is this phenomena related to the heat conduction?

Tyres colour is black due to the proportion of carbon mixed in it during the vulcanization of the rubber, to make the tyre shear resistant. Without vulcanization tyres won't be able to bear the friction heat and stress of the road. Thus carbon is responsible for giving tyres the prominent black colour. Adding of carbon prevents tyres from rapidly deteriorating because when ozone combines with the ultraviolet light from the sun. It attacks the polymer of the tyre.

TOP 15 Engineering Mechanics Questions & Answers

1. According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

A True B False

Answer: Option B

2.The friction experienced by a body, when in motion, is known as

A rolling friction B dynamic friction C limiting friction D static friction

Answer: Option B

3. Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity

A v B v/2 C v/4 D v/8

Answer: Option B

4. The term 'force' may be defined as an agent which produces or tends to produce, destroys or tends to destroy motion.

A Agree B Disagree

Answer: Option A

5. The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

A equal to B less than C greater than Answer: Option A