Fire Extinguishers Test (true or false) 53. Never play with the extinguishers so they will remain charged for
emergencies.
54. Before you use an extinguisher check what kind it is.
55. Class A - wood, paper, trash, etc...
56. Class B - flammable liquids such as paints and finishes.
57. Class C - electrical fires.
58. ABC extinguishers should be safe for all type fires.
59. Water on flammable liquids will spread the fire since it floats on the water.
60. Water on electrical is a shocking choice.
Portable Drill Test

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.