Passitexams

What are the 5 steps in the Scientific Method? - ANSWER 1. Identify a problem or pose a question based on an observation. 2. Formulate a hypotheses. 3. Conduct experiments or tests the hypotheses. 4. Observe and record the results. 5. Draw a conclusion (was the hypothesis correct?). * peer review is also important. Metric Unit deca (da): - ANSWER x 10^1 Metric Unit hecto (h): - ANSWER x 10^2 Metric Unit kilo (k): - ANSWER x 10^3 Metric Unit mega (M): - ANSWER x 10^6 Metric ...

Independent Variable - ANSWER The experimental factor that is manipulated; the variable whose effect is being studied. Placed on the x-axis (horizontal) on a graph. Dependent Variable - ANSWER The variable that is measured in an experiment. Placed on the y-axis (vertical) on a graph. Scientific theory - ANSWER Must be repeatable. Possible to be disproved and capable of change. Sampling and Sample Size - ANSWER Random sampling is the preferred, but isn't always possible. A large sample ...

Graticule slide - ANSWER marked with grid line, useful for counting or estimating a quantity Preparing acid solutions - ANSWER Always add acid to 2/3 water, then add rest of water # of Animal species - ANSWER over 1 million species and about 30 divisions # of insects - ANSWER 800,000 species, half of animal kingdom Characteristics of animal kingdom - ANSWER muliticellular, heterotrophic, reproduce sexually, do not have cell walls or chloroplasts, can move at some stage of life, can r...

Preventive maintenance - ANSWER is the periodic inspection and maintenance of plant assets and equipment to uncover conditions that may to equipment failure or shortened life This measures the amount of contaminants per litre of fluid. a. ferromagnetic analysis b. total base number c. infrared tests d. gravimetric level analysis - ANSWER d. gravimetric level analysis These tests indicate how much of the oil additives have been depleted a. ferromagnetic analysis b. total base number ...

Area of Triange - ANSWER A=1/2bh Area of a circle - ANSWER A=πr² Volume of a rectangular solid - ANSWER V=lwh Volume of a cylinder - ANSWER V=πr²h Volume of a sphere - ANSWER V=4/3πr³ Volume of a pyramid - ANSWER V=1/3Bh Volume of a cone - ANSWER V=1/3πr²h Circumference of a circle - ANSWER C=2πr Pythagorean Theorem - ANSWER

Millwright- Conveyors Questions And Answers! Entire belt runs off at all points of the line - ANSWER Belt is strained or elongated excessively on one side If belt is new allow time break in, if it is not new or does not break in properly cut out strained section and splice in new section The belt looks hard and has excessive cracks what could be the cause? - ANSWER Excessive heat, may need to change to excessive heat belt You notice separation of top cover what could be the cause? - ...

Millwright-Installation & Levelling CMost installation procedures start at the machine foundation substructure because? a. the manual says so b. the foundation introduces misalignments in the equipment c. the foundation moves d. the foundation is inconsistant - ANSWER b. the foundation introduces misalignments in the equipment When installing on concrete, millwrights usally start their installation on? a. level ground b. tempered ground c. the assumption that they will have to install ...

1. Metallic packing is used in a stuffing box due to: a. The need for a good seal b. In a high temperature application c. Compatibility with acids d. Good swelling properties allow expansion for better sealing - ANSWER b. In a high temperature application 2. Why is a lapping plate softer than the material you are lapping? a. It won't damage the part you are lapping b. It allows the compound to be embedded in the plate to assist in lapping process c. So you can control the speed of...

What controls the servo valve in a hydraulic governor - ANSWER Electrical controller What is the purpose of a sleeve - ANSWER To reduce shaft wear Why are gate valves used on pump inlet and outlets - ANSWER For isolation What does misaligned bearing bores cause - ANSWER Bent shaft an instrument wear What is the purpose of return idlers - ANSWER Support belt on return What would cause low NPSHA? - ANSWER Cavitation What does CMM allow for? - ANSWER Allows pro movement along thre...

Centrifugal pumps - ANSWER Centrifugal pumps are a type of machine used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy. operating principles - ANSWER Centrifugal pumps operate using kinetic energy to move fluids, utilizing an impeller and and a circular pump casing . The impeller produces fluid velocity and the casing forces the liquid to discharge from the pump, converging velocity to pressure. What type of pump is a non-positive displacement...