Mock Exam - Part 1 & 2 Flashcards
The critical point of a mixture occurs for which of the following cases?
a. the vapor and liquid exist in a single form
b. the liquid has no absorbed gas
c. the vapor phase is stable
d. the liquid is completely vaporized
a. the vapor and liquid exist in a single form
Determine the equivalent resistance of the circuit below
50 ohms
Calculate the mole fraction of ethylene glycol (C2H6O2) when 120g of it are dissolved in 1.2kg acetone (C3H6O)
b. 0.0857
If the particle has a velocity of 4 meters per second and a kinetic energy of 144 joules, then the mass, in kilograms of this particle must be:
d. 18
Air temperature is 250R, what is the equivalent of this reading in K?
a. 138.6
It is the distance a point on the circumference of the milling cutter travels in one minute measured in surface feet per minute
a. Cutting Speed
A steel rod is used as a weigh bar has a modulus of elasticity of 29x10^6 lbs per in^2. It provided with a very accurate method of determining change of length when load is applied. The rod is 1/2 in diameter and 24 inches long. A total extension of 0.004 inch is observed when a certain load is applied. Determine the value of the applied load.
b. 949 lbs.
Determine the total impedance of the circuit
c. (7+j0) ohms
Two boys B1 and B2 act as a point, The magnitude of B1 is 8lbs, and its direction is 60 degrees above the horizontal axis in the first quadrant. The magnitude of B2 is 5lbs and its direction is 53 degrees below the horizontal axis in the fourth quadrant. What is the magnitude of the resultant?
a. 7.6lbs
Find the angle of elevation of a gun which fires a shell with a muzzle velocity of 366 m/s at a target on the same level but 4575m
c. 9.79 degrees
A vertical column of water will be supported to what height by standard atmospheric pressure
10.3 m = 33.79 ft
A projectile is launched at 600fps(ft/s) with a 30 degrees inclination from the horizontal. The launch point is on a plateau 500ft above the plane of impact. Neglecting the air friction, find the maximum altitude above the plane of impact.
d. 1898 ft
Given Vab = 10V, determine the voltage of the source
b. 27V
The total mixture pressure P is the sum of the pressures that each gas would exert if it were to occupy the vessel alone at volume V and temperature T. This is known as ______
d. Dalton’s Law
A condenser vacuum gauge reads 715 mmHg when the barometer stands at 757 mm Hg. State the absolute pressure in the condenser in kPa.
a. 5.6 kPa
A chemist wants to make a 500ml of 0.05M HCl by diluting a 6M HCl solution. How many of that solution should be used?
d. 4.20 ml
If the specific weight of a liquid is 58.5 lbf per cubic foot, what is the specific volume if the liquid?
d. 1.067 cm^3/g
What is the volume of material removed from the work-piece in one minute?
b. Machine Horse Power
A body mass of 50g is at origin x=0 on a horizontal frictionless surface, At time t=0 a force of 10 dynes is applied to the body parallel to the x-axis, and 5 sec. Later the force is removed. What is the velocity of the body at t=5s?
a. 1.0 cm/s
What gas thermometer is based in the principle that at low pressure, the temperature of a gas is proportional to its pressure at constant volume?
d. Constant-volume gas thermometer
What time between 2 and 3 o’clock will the angle between the hands of the clock be bisected by the line connecting the center of the clock and the 3 o’clock mark?
a. 2:18:27.6
It concerns with avoiding diseases and disorders caused by exposure to hazardous materials or conditions
c. Occupational Health
Two major types of chemical bonds are observed in chemical bonding; ionic and covalent. Which are the following has a bond that is the least ionic in character?
c. H(sub)2
A player kicks a football at an angle of 37 degrees with the horizontal and with an initial velocity of 48 ft/s. A second player standing at a distance of 100ft from the first in the direction of the kicks start running to meet the ball at the instant it is kicked. How fast must run in order to catch the ball before it hits the ground?
d. 17.22 ft/s
It is a mechanical mixture of very pure iron and a silicate slag
Wrought Iron
A mixture of 14 psia and a 68oF that is 30% by the weight CO2 (MW=44 g/mol) and 70% by weight N2 (MW = 28 g/ml) has a partial pressure of CO2 in psia that is nearest to
b. 3.15
Calculate the molar concentration of a solution that contains 15g of potassium hydroxide in 225ml solution
c. 1.20M
A garden hose attached with a nozzle is used to fill a 10-gal bucket. The inner diameter of the hos is 2cm, and it reduces to 0.8 cm at the nozzle exit. If it takes 50 s to fill the bucket with water, determine the average velocity of water at the nozzle exit.
15.06 m/s
Determine the elevation of a road curve 183 m in radius so that there will be no side thrust for a speed of 72kph
b. 12.56 degrees
Determine the force in Newton in a piston of 465 mm^2 area with a pressure of 0.172 MPa
c. 80N
These allowances are added to fixed allowances when working conditions differ markedly for instance because of poor environmental conditions that cannot be improved, added stress and strain in performing the job in question, and so on.
d. Variable Allowances
The two steps in preparing chocolate candy bars are molding and packaging. Personal fatigue and delay allowances are set at 15%. The molding machine operator is rated 110% and the packer is rated 80%. Observed times per batch are given below.
Determine the normal time of both tasks
b. Molding = 31.90, Packing = 32