Plumbing Arithmetic 1.1

50問 • 13日前

問題一覧

The transmission of the heat from one place to another by fluid circulation betweek the spots of different temperature is called

Convection

A flower pot falls a legde of a 5th floor window, just as it passes the third floor window, someone accidentally drops a glass of water from the window. Which of the following is true?

The flower pot hit the ground first and with higher speed thatn the glass.

Whenever a net force acts in a body, it produces an acceleration in the direction of the resultant force, an acceleration which is directly proportional to the resultant and inversely proportional to the mass of the body. This theory is popularly known as?

Newton’s Second Law of Motion

The ratio of the density of the substance to the density of water.

Specific gravity

Melting point of ice is:

273 K

The standard acceleration due to gravity is:

32.2ft/s^2

Which of the following is INCORRECT?

All scalar quantities have direction.

A vector is a straight line segment that has a definite

Length, direction and sense

All are vector quantities except

Mass

All are scalar quantities except

Acceleration

An instrument used to measure air pressure is the

Barometer

Under normal condition, the gauge pressure at watwr surface is

Equal to zero

What is the another name for specific gravity

Relative density

What is another term for density?

Specific weight

What is the SI unit of work?

Joule

Which of the following is NOT a unit of work?

Slug

The product of force and displacement is called?

Work

The unit of force which is equivalent to 1gcm/s^2

Dyne

Which of the following is NOT a unit of force?

Erg

Any influence capable of producing change in the motion of an object is called?

Force

The tendency of any object to remain at rest or to continue in motion is called

Inertia

The distance per unit time

Speed

Which of the following statements is true?

The weight of a body depends on its location while the mass is independent of its location.

A measure of inertia of a body, which is its resistance to a change in velocity.

Mass

A quantitative measure of inertia.

Mass

Which of the following is TRUE about the weight of an object?

It is a force with which it is attracted to the earth.

Indicate the FALSE statement.

Weight of the body is always equal to its mass.

What will happen to the kinetic energy of the body if its velocity doubled?

Quadrupled

The energy by the virtue of an object’s mass is called

Rest energy

An energy by virtue of the object’s motion is called

Kinetic energy

An energy by the virtue of the object’s position of elevation is called

Potential energy

Kinetic energy equals

1/2mv^2

There is no work done when?

The force is perpendicular to the displacement

Indicate the FALSE statement about work

The unit of work in the SI system is joules and erg in the English system.

The rate of doing work

Power

What is the SI unit of power?

Watt

All are units of power, except

Joules

Joule is an SI unit of

Work

Why is it that the power delivered by a machine is always less than the power supplies to it

Due to presence of friction

The capacity to do work is called

Energy

The perfect inelastic collision, the coefficient of elevation restitution e is equal to

A vector quantity which is a product of mass and velocity of the body.

Momentum

The product of a force and the time during which it acts is known as

Impulse

Momentum is the product of mass and

Velocity

Change of momentum is equal to

Impulse

What is the SI unit of impulse?

N-s

If the velocity of the body doubled in value, its ____ will also doubled.

Momentum

The acceleration is ____ the mass of the object.

Inversely proportional to

What is the SI unit of momentum?

N-s

The displacement per unit time

Speed

YT1 Materials Engineer EXAM

ユーザ名非公開 · 100問 · 13日前

YT1 Materials Engineer EXAM