To protect the rotor of a motor disassembled for maintenance or overhaul, it should be()
When a refrigeration compressor motor fails to start, the FIRST thing that should be checked for is a ().
After operation, we should stop the electric motor.()
If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?()
A hydraulic motor may be driven by ().
In heavy seas the helmsman should steer the motor lifeboat().
When a refrigeration compressor motor fails to start, the FIRST thing that should be checked for is a ().
When backing a motor propelled lifeboat (right-hand propeller) with the rudder amidships,the stern will back().
In motor ship, () is often used to recover some of the heat carried in the exhaust gases from the main engine.
What type of electric motor is most commonly used on board ship?()