Mechanical Systems for Buildings MCQs
Mechanical Systems for Buildings MCQs
Answer these 100 Mechanical Systems for Buildings MCQs and see how sharp is your knowledge of Mechanical Systems for Buildings.
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1: Bigger gear
A. Driving gear
B. Internal combustion engine
C. Potential energy
D. Gears
2: A large gear driving a smaller gear decreases torque and increases speed in the driven gear
A. Steam turbine
B. Effort arm
C. Effort force
D. Multiplying gears
3: Energy is transferred from one place to another - and no energy is changed or converted.
A. Steam engine
B. Internal combustion engine
C. Transmission
D. Load arm
4: The rate of motion that an object changes position
A. The Industrial Revolution
B. Speed
C. Fulcrum
D. Effort advantage
5: Used to control the flow of a fluid. It is a moveable part that controls the flow by opening or closing
A. Load arm
B. Valve
C. Cost of MA
D. Joule
6: Distance between the fulcrum and the effort force
A. Effort force
B. Effort arm
C. Hydraulic systems
D. Work input
7: Within a machine are groups of parts that perform specific functions - such as braking or steering
A. Speed
B. Pascal
C. Subsystems
D. Complex machines
8: The fluid transfers the pressure from the input piston to the ____________
A. Effort arm
B. Output piston
C. 3 classes of levers
D. Wheel and axle
9: Distance between the fulcrum and the load
A. Formula for work
B. Joule
C. Load arm
D. Effort force
10: Heated water to make steam and then used to move a piston. When the piston moved - it caused an attached rod (which was connected to a crankshaft) to move as well - making the engine work.
A. Inclined plane
B. Driving gear
C. Circulatory system
D. Steam engine
11: A small gear driving a larger gear increases torque and reduces speed in the driven gear
A. Reducing gears
B. Work
C. Pinion
D. 3 classes of levers
12: Do the work faster
A. Mass production
B. Wheel and axle
C. Internal combustion engine
D. Speed advantage
13: Stored energy
A. Parallel gears
B. Gears
C. Potential energy
D. Cost of MA
14: A rigid bar or plank that can rotate around a fixed point
A. Ergonomics
B. Steam turbine
C. Speed advantage
D. Lever
15: Or ramp - makes it easier to move a load higher than it is - but - it has to be moved over a much longer distance.
A. Multiplying gears
B. The Industrial Revolution
C. Inclined plane
D. Block and tackle
16: Transferred to kinetic energy in machines in a dam to generate electrical energy
A. Driving gear
B. Pressure
C. Gravitational potential energy
D. Work
17: The ratio of the output to the input of any system - a comparison of the useful work provided by a machine or a system with - the work supplied to the machine or system
A. Bones
B. Efficiency
C. 3 classes of levers
D. Speed advantage
18: Work done by machine / work done to make the machine operate x100
A. Formula for efficiency
B. Hydraulic systems
C. Lever
D. Kinetic energy
19: If the output (driven) gear is smaller than the input (drive) gear, the speed will
A. Increase
B. Be constant
C. Decrease
D. There is not enough information
20: To push or pull an object
A. Torque
B. Work
C. Force
D. Energy
21: A force that opposes the movement of one solid in contact with another solid.
A. Friction
B. Efficiency
C. Radian
D. Motor
22: A ratio of the output work delivered by a machine to the input work done on the machine to operate it.
A. Power
B. Friction
C. Radian
D. Efficiency
23: A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.
A. Wedge
B. Screw
C. Lever
D. Inclined plane
24: An inclined plane wrapped around a rod forms this simple machine
A. Lever
B. Pulley
C. Screw
D. Wedge
25: A simple machine that consists a rigid bar that pivot about a fixed point
A. Lever
B. Pulley
C. Wheel and axle
D. Fulcrum
26: An axe is an example of a
A. Pulley
B. Inclined plane
C. Screw
D. Wedge
27: A seesaw is an example of a
A. Wedge
B. Lever
C. Inclined plane
D. Pulley
28: A device that has two or more simple machines working together
A. Fulcrum
B. Pulley
C. Compound (complex) machine
D. Motor
29: Stairs
A. Wedge
B. Pulley
C. Inclined plane
D. Wheel and axle
30: What type of simple machine is found on the cap of a pickle jar?
A. Lever
B. Inclined plane
C. Pulley
D. Screw
31: What type of simple machine is this?
A. Wheel and axle
B. Gear
C. Lever
D. Inclined plane
32: The fixed point on the lever is called
A. Load
B. Resistance
C. Bar
D. Fulcrum
33: Which of the following does a simple machine do?
A. Allows the users to apply less force over a longer distance
B. Reduce the amount of force needed to do work
C. Change the direction of the applied force
D. All of the above
34: What is the definition for mechanical advantage?
A. The number of times a machine increases the input force
B. The number of times a person can lift a weight
C. How much work is done in a given amount of time
D. The rate of doing work
35: Using an inclined plane makes the distance of an object ________, but the amount of work is _________ to move the object.
A. Increase, descreased
B. Increase, increased
C. Decrease, increased
D. Decrease, decreased
36: How could I reduce the effort force needed to lift the load?
A. Move the fulcrum away from the load
B. Move the fulcrum closer to the load
C. Place the fulcrum in the middle
37: How much work is done if I use 5 Newtons to move an object 2 meters?
A. 10 Newtons
B. 10 meters
C. 10 Joules
D. 7 Joules
38: What force opposes motion motion and decreases the efficiency of a machine?
A. Gravity
B. Friction
C. Pressure
39: A piston made of gray cast iron has piston head thickness of 20 mm. What will be thickness of piston barrel under piston rings if it has allowable tensile stress of 30 N/mm2? ( Bore diameter = 50 mm & Pmax =15 N/mm2)
A. 10 mm
B. 20 mm
C. 30 mm
D. Insufficient data
40: A piston has allowable tensile stress of 50 N/mm2 and has bore diameter 150 mm. Considering strength of piston, what will be the thickness of piston head if maximum pressure of 10 N/mm2 acts on it?
A. 29 mm
B. 35 mm
C. 53 mm
D. Insufficient data
41: What is the function of gudgeon pin?
A. Acts as stiffeners
B. Supports piston head
C. Connects piston to connecting rod
D. All of the above
42: Which of the following parts of piston act as bearing for connecting rod side thrust?
A. Reinforcing ribs
B. Piston barrel
C. Piston gudgeon
D. Piston skirt
43: Single cylinder four stroke engine has brake power of 8 kW and brake mean effective pressure of 0.55 Mpa. What is the length of cylinder which is 1.2 times of bore diameter? (n = 3000 rpm)
A. 110 mm
B. 103 mm
C. 70 mm
D. 65 mm
44: Which type of formed threads are used for vertical pressure vessels in the pressure range of 0.1 N/mm2 to 1.5 N/mm2?
A. Plain formed head
B. Torispherical dished head
C. Semi-elliptical dished head
D. All of the above
45: Internal pressure of 2.5 Mpa acts on a pressure vessel of thickness 15 mm and internal diameter of 1500 mm. What is the stress induced in longitudinal direction?
A. 36.63 N/mm2
B. 59.13 N/mm2
C. 65.62 N/mm2
D. 131.25 N/mm2
46: Design pressure for unfired pressure vessels is 1.05 times of _______
A. Minimum working pressure
B. Maximum working pressure
C. Hydrostatic test pressure
D. None of the above
47: Class 3 pressure vessels having welded joints are __________
A. Fully radio-graphed
B. Partially radio-graphed
C. Spot radio-graphed
D. Not radio-graphed
48: Which type of welded joints are not included in class 3 pressure vessels?
A. Double welded butt joint with full penetration
B. Single welded but joint with back strip
C. Single full fillet lap joints
D. None of the above
49: Which of the following principle recognizes human capabilities and limitations using design effective handling equipment?
A. Safety principle
B. Obsolescence principle
C. Ecology principle
D. Ergonomic principle
50: What does DFMA stand for?
A. Design for Manual Assembly
B. Design for Manufacture and Assembly
C. Both a. and b.
D. None of the above
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