PE 3rd CLASS A1 COMPLETE EXAM QUESTIONS AND
100% VERIFIED ANSWERS
First. The sine of an acute angle in a right angle triangle equals the opposite side
or hypotenuse.
If the hypotenuse of a right-angle triangle is 120 mm and the angle is 28O 37',
The opposing side's length is: ANSWER 57.48 mm
The value of D in the formula 0.004 + D = 0.0042 is: - ANSWER 0.0002
The angle's - ANSWER value rises as the cosine falls.
ANSWER complimentary angles are any two angles whose sum equals 90°.
The first is ANSWER A, which is the trigonometric value. 90° sine
The B. cosine of zero degrees
C. 45° tangent
The speed of a car is sixty miles per hour. This would be equal to: - ANSWER
26.81 m/s when expressed in meters per second.
The force that is opposite in direction but equal in size to the resultant force is
known as the equilibrant.
Any quantity that solely possesses magnitude and can be adequately represented
by the following formula: ANSWER a number with the appropriate unit
Applying an additional force that is same in magnitude but opposite in direction
to the ANSWER resultant can bring a body into balance.
A displacement from point A of 10.8 m N of W can be obtained by adding a
displacement of 9 m north of point A and another of 6 m west of point A.
, A twisting or turning effect is the moment of a force about a point.
The friction force will: ANSWER increase when the coefficient of friction
rises and the force between two surfaces stays the same.
A rope that is 20° above the horizontal pulls a body with a gravitational force of
2000 N along a horizontal surface at a constant speed. The coefficient of sliding
friction is - ANSWER 0.0723 if the rope pull is 150 N.
Energy can be changed into a variety of forms.
The ideal mechanical advantage is the velocity ratio.
When a 1 N weight travels at: - ANSWER 4.4 m/s, its kinetic energy is 1 J.
A material with an ultimate strength of 490 MPa and a safety factor of 7 would
have the following working stress: ANSWER 70 MPa
According to Hooke's Law, if the material's elastic limit is not exceeded, the
stress in an elastic body is directly proportional to the strain.
The safety factor is always stated as a ratio: - ANSWER .
The greatest load should be divided by the initial cross-sectional area to
determine the ultimate stress of a material.
To calculate safe working stress, divide the ultimate strength by the safety
factor.
At its free end, a 6-meter-long cantilever beam supports a focused load of 45
kN. What is the wall's shear force? - REPLY 45 kN
A beam that is sustained at both ends is referred to as a "simple beam" when
classifying beams.
The quantity of matter is measured using the term _____. ANSWER mass
When a 10-meter-long steel pipe is heated to 85 degrees Celsius, it will expand
by about 1 centimeter.
100% VERIFIED ANSWERS
First. The sine of an acute angle in a right angle triangle equals the opposite side
or hypotenuse.
If the hypotenuse of a right-angle triangle is 120 mm and the angle is 28O 37',
The opposing side's length is: ANSWER 57.48 mm
The value of D in the formula 0.004 + D = 0.0042 is: - ANSWER 0.0002
The angle's - ANSWER value rises as the cosine falls.
ANSWER complimentary angles are any two angles whose sum equals 90°.
The first is ANSWER A, which is the trigonometric value. 90° sine
The B. cosine of zero degrees
C. 45° tangent
The speed of a car is sixty miles per hour. This would be equal to: - ANSWER
26.81 m/s when expressed in meters per second.
The force that is opposite in direction but equal in size to the resultant force is
known as the equilibrant.
Any quantity that solely possesses magnitude and can be adequately represented
by the following formula: ANSWER a number with the appropriate unit
Applying an additional force that is same in magnitude but opposite in direction
to the ANSWER resultant can bring a body into balance.
A displacement from point A of 10.8 m N of W can be obtained by adding a
displacement of 9 m north of point A and another of 6 m west of point A.
, A twisting or turning effect is the moment of a force about a point.
The friction force will: ANSWER increase when the coefficient of friction
rises and the force between two surfaces stays the same.
A rope that is 20° above the horizontal pulls a body with a gravitational force of
2000 N along a horizontal surface at a constant speed. The coefficient of sliding
friction is - ANSWER 0.0723 if the rope pull is 150 N.
Energy can be changed into a variety of forms.
The ideal mechanical advantage is the velocity ratio.
When a 1 N weight travels at: - ANSWER 4.4 m/s, its kinetic energy is 1 J.
A material with an ultimate strength of 490 MPa and a safety factor of 7 would
have the following working stress: ANSWER 70 MPa
According to Hooke's Law, if the material's elastic limit is not exceeded, the
stress in an elastic body is directly proportional to the strain.
The safety factor is always stated as a ratio: - ANSWER .
The greatest load should be divided by the initial cross-sectional area to
determine the ultimate stress of a material.
To calculate safe working stress, divide the ultimate strength by the safety
factor.
At its free end, a 6-meter-long cantilever beam supports a focused load of 45
kN. What is the wall's shear force? - REPLY 45 kN
A beam that is sustained at both ends is referred to as a "simple beam" when
classifying beams.
The quantity of matter is measured using the term _____. ANSWER mass
When a 10-meter-long steel pipe is heated to 85 degrees Celsius, it will expand
by about 1 centimeter.
