NCCER 26211-20 NEWEST ACTUAL WITH COMPLETE
QUESTIONS AND ORRECT ANSWERS/ VERIFIED/GRADED A+/
Low-voltage Remote Control Switching Relays Use
Split Low-voltage Coil
Mechanically Held Relays and Contactors are Quieter Than
Electrically Held Devices and Often Used in Auditoriums
Because
Quieter Operation
Power Supply for Low-Voltage Switching Systems
transformer
Lubrication Timing for Large Industrial Motors
timing relay
Overload Relay Activation in Continuous Processing Machines
alarm circuit
Mounting Location for Low-Voltage Lighting Control Panel
Page 1 of 5
, at eye level between two studs
Symbol for Low-Voltage Equipment
transformer
A Motor is Connected
L1 to T1, L2 to T2, and L3 to T3. To Reverse the Motor, Connect
Leads: L1 to T3, L2 to T2, and L3 to T1
A Motor Overload Relay Consists of
Current-sensing Unit and a Mechanism Activated by the
Sensing Unit that Opens the Motor Circuit
A Shading Coil is Used to
Prevent Contact Chatter
A Single-pushbutton Contact Can Control the Sequence of
Operation of Several Loads Using a
Multi-pole Relay
Page 2 of 5
QUESTIONS AND ORRECT ANSWERS/ VERIFIED/GRADED A+/
Low-voltage Remote Control Switching Relays Use
Split Low-voltage Coil
Mechanically Held Relays and Contactors are Quieter Than
Electrically Held Devices and Often Used in Auditoriums
Because
Quieter Operation
Power Supply for Low-Voltage Switching Systems
transformer
Lubrication Timing for Large Industrial Motors
timing relay
Overload Relay Activation in Continuous Processing Machines
alarm circuit
Mounting Location for Low-Voltage Lighting Control Panel
Page 1 of 5
, at eye level between two studs
Symbol for Low-Voltage Equipment
transformer
A Motor is Connected
L1 to T1, L2 to T2, and L3 to T3. To Reverse the Motor, Connect
Leads: L1 to T3, L2 to T2, and L3 to T1
A Motor Overload Relay Consists of
Current-sensing Unit and a Mechanism Activated by the
Sensing Unit that Opens the Motor Circuit
A Shading Coil is Used to
Prevent Contact Chatter
A Single-pushbutton Contact Can Control the Sequence of
Operation of Several Loads Using a
Multi-pole Relay
Page 2 of 5
