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Sample Practice Test Questions
A right angle measures:
90°
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
A cylinders acts as a guide for a:
piston
Cylinders act as a guide for the pistons that translate the heat energy of combustion into the mechanical energy necessary to move a vehicle. Piston rings seal the piston to the cylinder to contain combustion gases and also regulate the oil distribution between the piston and cylinder wall. A cylinder head closes in the top of the cylinder forming the combustion chamber which is sealed by a head gasket (head). The head provides space for air and fuel intake valves, exhaust valves, and mounts for spark plugs and fuel injectors.
Which of these saws is used with a miter box?
back saw
A miter box utlizes a back saw (a fine toothed saw with a rigid strip of steel opposite its blade edge) to make cuts in wood at a specified angle.
Solve 3c + 2c = 9c - 9y + 8 for c in terms of y.
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
3c + 2y = 9c - 9y + 8
3c = 9c - 9y + 8 - 2y
3c - 9c = -9y + 8 - 2y
-6c = -11y + 8
c = \( \frac{-11y + 8}{-6} \)
c = \( \frac{-11y}{-6} \) + \( \frac{8}{-6} \)
c = 1\(\frac{5}{6}\)y - 1\(\frac{1}{3}\)
Arteries carry __________ blood at __________ pressure.
oxygenated, high
Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.
A block and tackle with four pulleys would have a mechanical advantage of:
4
Two or more pulleys used together constitute a block and tackle which, unlike a fixed pulley, does impart mechanical advantage as a function of the number of pulleys that make up the arrangement. So, for example, a block and tackle with three pulleys would have a mechanical advantage of three.
An amplifier is most similar in function to which of the following:
step-up transformer
An amplifier is a device that takes a small input signal and creates a larger output signal. This makes it most similar to a step-up transformer which takes a smaller input voltage and creates a larger output voltage.