Engineering

To protect workers when using compressed air for cleaning, employers must __ reduce pressure to 30 psi or lower remove guarding from the air pressure nozzle require the use of leg and foot protection increase pressure to 100 psi to remove debris faster

A type of hand -operated winching device that should never be used for vertical overhead liting is a __ come-along block and tackle chain hoist ratchet lever hoist

Circuit breakers can be rated for either alternating current or direct current or both Select one: C True False

The first American space station was launched in 1973. NASA scientists needed a way to give the astronauts who lived there for 171 days a way to detect smoke or fire before it was too late to stop. They invented a smoke detector for Skylab that ended up in about 90% of all private homes as well. Inform Entertain Persuade Describe

¿Cuándo se deben volver a calibrar los termómetros? Cada 4 horas Inmediatamente después de cada uso Si se cayó recientemente

Thermal printers use thermal paper with what kind of ink? Ink jet Toner Wax based

An engineer is designing the operator panel for a water treatment plant. The operator will be able to see 6 LED lights in a row that indicate the condition of the water treatment system. LEDs can be red, yellow, green, or off. How many different conditions can be signaled with the LEDs? square

Machinery with rotating or reciprocating parts that are within seven feet of the floor or working platform requires what additional equipment? Reinforced couplings Shaft projections Effective guards Balanced pulleys

The angle accuracy of the TechAngle Wrench is +1- __ 3 percent clockwise 1 percent 1 degree 3 degrees clockwise

Technician A says that the torque applied to the head bolts is the same as the clamping force on the gasket. Technician B says that the clamping force is the force actually applied to the surfaces of the gasket. Who is correct? A) Neither Technicians A nor B B) Technician A C) Both Technicians A and B D) Technician B