Engineering Mechanics: Statics, Student Value Edition; Modified Mastering Engineering with Pearson eText -- Standalone Access Card -- for Engineering Mechanics: Statics (14th Edition)
14th Edition
ISBN: 9780134246192
Author: Russell C. Hibbeler
Publisher: PEARSON
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Textbook Question
Chapter 1.6, Problem 10P
Represent each of the following combinations of units in the correct SI form: (a) GN · μm, (b) kg/μm, (c) N/ks2, and (d) kN/μs.
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3.
9.
10.
The centrifugal tension in belts
(a) increases power transmitted
(b) decreases power transmitted
(c) have no effect on the power transmitted
(d) increases power transmitted upto a certain speed and then decreases
When the belt is stationary, it is subjected to some tension, known as initial tension. The value of this
tension is equal to the
(a) tension in the tight side of the belt
(b) tension in the slack side of the belt
(c) sum of the tensions in the tight side and slack side of the belt
(d) average tension of the tight side and slack side of the belt
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (d) is given by
60°
(a) p=d sin
(c) p=d sin
(120°
T
where T Number of teeth on the sprocket.
90°
(b) p=d sin
T
180°
(d) p=d sin
T
OBJECTIVE TYPE QUESTIONS
1.
The maximum fluctuation of energy is the
2.
(a) sum of maximum and minimum energies
(b) difference between the maximum and minimum energies
(c) ratio of the maximum energy and minimum energy
(d) ratio of the mean resisting torque to the work done per cycle
In a turning moment diagram, the variations of energy above and below the mean resisting torque line
is called
(a) fluctuation of energy
(b) maximum fluctuation of energy
(c) coefficient of fluctuation of energy
(d) none of the above
Chapter 16: Turning Moment Diagrams and Flywheel 611
The ratio of the maximum fluctuation of speed to the mean speed is called
3.
(a) fluctuation of speed
(c) coefficient of fluctuation of speed
4.
(b) maximum fluctuation of speed
(a) none of these
The ratio of the maximum fluctuation of energy to the.......... is called coefficient of fluctuation of
energy.
(a) minimum fluctuation of energy
(b) work done per cycle
The maximum fluctuation of energy in a flywheel is equal to
5.…
OBJECTIVE TYPE QUESTIONS
1.
The velocity ratio of two pulleys connected by an open belt or crossed belt is
2.
(a) directly proportional to their diameters
(b) inversely proportional to their diameters
(c) directly proportional to the square of their diameters
(d) inversely proportional to the square of their diameters
Two pulleys of diameters d, and d, and at distance x apart are connected by means of an open belt
drive. The length of the belt is
(a)(d+d₁)+2x+
(d₁+d₂)²
4x
(b)(d₁-d₂)+2x+
(d₁-d₂)²
4x
(c)(d₁+d₂)+ +2x+
(d₁-d₂)²
4x
(d)(d-d₂)+2x+
(d₁ +d₂)²
4x
3.
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then
(a) open belt drive is recommended
(b) cross belt drive is recommended
(c) both open belt drive and cross belt drive are recommended
(d) the drive is recommended depending upon the torque transmitted
Due to slip of the belt, the velocity ratio of the belt drive
4.
(a) decreases
5.
(b) increases
(c) does not change
When two pulleys…
Chapter 1 Solutions
Engineering Mechanics: Statics, Student Value Edition; Modified Mastering Engineering with Pearson eText -- Standalone Access Card -- for Engineering Mechanics: Statics (14th Edition)
Ch. 1.6 - What is the weight in newtons of an object that...Ch. 1.6 - Represent each of the following combinations of...Ch. 1.6 - Represent each of the following combinations of...Ch. 1.6 - (b) 350 lb/ft3 to kN/m3, (c) 8 ft/h to mm/s....Ch. 1.6 - Represent each of the following as a number...Ch. 1.6 - Round off the following numbers to three...Ch. 1.6 - Represent each of the following quantities in the...Ch. 1.6 - Represent each of the following combinations of...Ch. 1.6 - Represent each of the following combinations of...Ch. 1.6 - Represent each of the following combinations of...
Ch. 1.6 - Represent each of the following with SI units...Ch. 1.6 - Evaluate each of the following to three...Ch. 1.6 - Determine its density in SI units. Use an...Ch. 1.6 - (212 mN)2, (52 800 ms)2, and [548(105)]1/2 ms.Ch. 1.6 - is a dimensionality homogeneous equation which...Ch. 1.6 - To show this, convert 1 Pa = 1 N/m2 to lb/ft2....Ch. 1.6 - What is the density expressed in SI units? Express...Ch. 1.6 - Evaluate each of the following to three...Ch. 1.6 - If the density (mass/Volume) of concrete is 2.45...Ch. 1.6 - If the man is on the moon, where the acceleration...Ch. 1.6 - If they are 800 mm apart, determine the force of...
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