TSSA Practice Exam Questions with Correct Answers

TSSA Practice Exam Questions with Correct Answers A 7m long bar of negligible mass is supported on a fulcrum, situated 4.7m from the left end. A 13.5N force is applied downward at the right end of the bar. What force is required at the left end for equilibrium? - Answer-6.61 N A bimetal thermometer consists of: - Answer-Two dissimilar metals welded together. What are the main component metals of "white metal"? - Answer-lead and tin Industrial stack emissions are - Answer-reflective of the type of fuel being burned A Van Stone flange is fitted ___________ on a pipe: - Answer-Loosely Which one of the following fusion welding is a totally manual process? - Answer-oxy-fuel The state of matter of a particular substance is dependent on its: - Answer-Temperature and pressure The "flash point" of a flammable liquid is the temperature at which: - Answer-the liquid will produce enough vapour to form a flammable mixture when mixed with air On a P&ID, symbols are used for instrumentation the first letter stands for - AnswerWhat is being measured The low water fuel cutoff is a device fitted to the boiler to shut the: - Answer-Fuel valve if the water level becomes too low The unit of measure for work in the SI system is: - Answer-Joules The purpose of the non-return valve on a boiler is to_____________________. - Answer-Prevent the back flow of steam into the boiler The ratio between the ultimate strength and the allowable stress is called the - AnswerSafety factor The efficiency of a combined cycle plant, using a pressurized fluidized bed boiler, is about _____ higher than that of a conventional pulverized coal plant. - Answer-5% A Bourdon tube may be manufactured in the shape of a helix so that _______________________ than a standard bourdon tube - Answer-It has enough power and rotation to move the pens of a recorder without the use of gears If a substance goes through a process that changes its composition so that it is no longer the same substance, then the substance has undergone a: - Answer-Chemical change By doing this, waste disposal can be made to be more effective. - Answer-Treat the waste Which of these is a normal type of maintenance: - Answer-Preventative maintenance A packaged watertube boiler having two mud drums is the: - Answer-"A" type An example of a chemical property is the: - Answer-Heating value of propane Electrons are negatively charged particles: - Answer-Orbiting about the nucleus of an atom Foam extinguishers are recommended for: - Answer-Class "A" and Class "B" fires An atomizing air compressor is usually: - Answer-A small, rotary air compressor A cyclone separator in a boiler steam drum: - Answer-Removes moisture from steam, using centrifugal force An 8m long bar is pivoted at 5m from the left end. A force of 15N is applied downward on the left end and a force of 20N is applied downward on the right end. What are the clockwise and counter-clockwise moments due to each force and in which direction will the bar rotate? - Answer-75 Nm counter-clockwise, 60 Nm clockwise, counter-clockwise rotation. Lines used to indicate distance between two points on a sketch are called: - AnswerDimension lines The right hand rule for generators is used to: - Answer-Determine direction of induced current flow If a welding electrode has the identifying number "E6016", what does the "1" represent: - Answer-The welding position Before being pumped to the burner, heavy oils are heated to approximately: - Answer90°C The purpose of a superheater is to: - Answer-Increase the temperature of the steam Clear definitions for terms and equipment relating to refrigeration and air conditioning equipment are defined in the _____. - Answer-CSA-B52 Brass and bronze are alloys of: - Answer-copper When controller output is proportional to the amount of deviation, the controller is: - Answer-Proportional What does it mean when a type of NDE is referred to as a "volumetric" test? - Answer-It means that it can detect indications internally in the test piece. Which of the following is required in order to progress to a higher certificate? - AnswerEducation, experience, the next lower level certificate, and pass SOPEEC examinations A modulating pressure atomizer has its return oil flow regulated by: - Answer-A firing rate control valve in the return line