Answering the following questions correctly will satisfy criteria P6
1. Consider the 4 applications below:
i)
ii)
iii)
iv)
A
A
A
A
water pump that fills a water tower from the standby reservoir.
lift in a 20 story hotel.
coal conveyor belt 1000m long
lathe
Each is to be driven by an induction motor.
State for each load:
a)
b)
The characteristics of the load (show how it will vary with time)
Which type of motor will be most suitable for that load and why?
Answering the following questions correctly will satisfy criteria P7
2. Consider the lathe, find out:
i)
ii)
What type of motor is used? (name plate details)
What type of starter is used for the motor?
Answering the following questions correctly will satisfy criteria P8
3. A 1.1kw three phase squirrel cage motor is to be connected directly to
'cush' drive.
Describe using diagrams and tables if required:
i)
ii)
iii)
iv)
v)
The electrical requirements for the installation.
The mechanical requirements for the installation.
How you would install it.
The commissioning tests required.
A maintenance schedule for the motor.
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a mono-pump
via a