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WorksheetsIndustrial Motor Controller
Total questions: 25
Worksheet time: 13mins
What is the function of the figure shown?
Electrical interlock
Protect the circuit
Start the circuit
Stop the circuit
_________is injury, coming from electrical current passing though the human body.
Electrical Safety
Risk Grateful
Hazard
Electric Shock
What component is in 1 the circuit?
Magnetic Contactor
Overload Relay
Holding Coil
Push-button
In the circuit, this type of connection is used when the name plate shows that the motor horsepower is _____________.
more than 3 HP
less than 5 HP
more than 5 HP
more than 2 HP
How many contactor/s is in the circuit?
1
2
3
4
Identify the function of part number 1 from the figure shown.
Protect from overload
Power supply
Electrical interlock
Start the circuit
In motor control system the figure shown is a ________.
Push-button N/O
Push-button N/C
Switch
Power supply
There is an AC water leakage on the floor of our workshop, what the best thing to do?
Clean the floor
Turn-off the AC
Isolate the leakage and call for an engineering
Call the Administrations
From the circuit, the c22 and c12 are usually in which terminals?
3,4
A1, A2
13,14
21, 22
At ON and OFF delay timer which terminal indicate as common?
15
16
18
A1 &A2
_________ is anything at the workplace that can potentially harms people.
Accident
Calculating
Hazard
Injury
What component identified at no. 5?
Push button switch (NC)
Contactors
Contactor Coil
Overload relay
What component identified at no. 3?
Push button switch (NC)
Push button switch (NO)
Overload relay
3 phase induction motor
What is the function of C22&C12 IN Reverse control circuits?
Stop and start circuits
Electrical interlock
Self -holding contacts
None of them
Name the figure shown.
Push Button switch
Contactor
Limit switch
Float switch
Refer to figure shown, name the parts 1 and 5.
Stop push button, start push button
Start bush button, auxiliary contact
Thermal overload relay, magnetic holding coil of contactor
Auxiliary contact, start push button
Refer to figure shown, name the parts 2 and 3.
Stop push-button, start push-button
Thermal overload relay, magnetic holding coil of contactor
Auxiliary contact, start push-button
Start push-button, auxiliary contact
What is the first step in addressing the hazard at the workshops?
Eliminate the hazard
Isolate the hazards
Administrative controls
Substitute the hazards
What is the minimum current a human can feel?
.5 milliampere
1 milliampere
1.5 milliamperes
2 milliamperes
Identify the figure shown.
Contactor coil
Normally open contacts
Normally Close contacts
Timer coil
From the circuit shown, which contactors operate at star connection?
C2 AND C3
C1 AND C2
C3 AND C2
C1 AND C3
If you want to shut-down the controller in specified time, you need to use____ timer.
on-delay
off-delay
limit switch
float switch
What are the missing on the blanks?
Isolate the hazard and Call the technician
Isolate the hazard and Replacing the Damage
Isolate the hazard and Administrative Controls
None of these
What is the correct order from the picture?
5,2,3,4,1
4,1,3,5,2
5,1,3,4,2
5,1,2,4,3
What are the components seen in the circuit?
Contactors, Overload Relay and Motor
Contactors, Overload Relay and Lamp
Contactors, Overload Relay and Selector Switch
Contactors, Overload Relay and Push-button
