Trades and Apprenticeship

For the PLC ladder logic program shown, the address of the M coil is

For the PLC ladder logic program shown, the address of the M coil is

[html]For the PLC ladder logic program shown, the address of the M coil is

gslwong   35   1 Reply

moqamoqa

For the PLC block diagram shown, the computer is

For the PLC block diagram shown, the computer is

[html]For the PLC block diagram shown, the computer is

meghan.binge   30   1 Reply

nursethomas

For the PLC block diagram shown, the ________ receives signals from input devices as sensors and switches.

For the PLC block diagram shown, the ________ receives signals from input devices as sensors and switches.

[html]For the PLC block diagram shown, the ________ receives signals from input devices as sensors and switches.

apple321   35   1 Reply

Pmoch

For the PLC block diagram shown, the ________ operates load type field devices such as pilot lights ...

For the PLC block diagram shown, the ________ operates load type field devices such as pilot lights ...

[html]For the PLC block diagram shown, the ________ operates load type field devices such as pilot lights and solenoids.

arpylzr75   23   1 Reply

live4outdoors

For the circuit shown, the anode to cathode of the SCR is

For the circuit shown, the anode to cathode of the SCR is

[html]For the circuit shown, the anode to cathode of the SCR is

dalvirb   28   1 Reply

piccola44

For the circuit shown, once the SCR is switched ON it can be turned OFF by

For the circuit shown, once the SCR is switched ON it can be turned OFF by

[html]For the circuit shown, once the SCR is switched ON it can be turned OFF by

anymous   28   1 Reply

astroasis

For the circuit shown, during the positive half-cycle of the AC input wave the

For the circuit shown, during the positive half-cycle of the AC input wave the

[html]For the circuit shown, during the positive half-cycle of the AC input wave the

swimchk13   34   1 Reply

chanelfargesen

For the circuit shown the AC input voltage is applied

For the circuit shown the AC input voltage is applied

[html]For the circuit shown the AC input voltage is applied

theferpectstudent   30   1 Reply

cblack14

For the block diagram of the transistor shown, the unidentified block is

For the block diagram of the transistor shown, the unidentified block is

[html]For the block diagram of the transistor shown, the unidentified block is

dbomb1   33   1 Reply

doquangnhat

For a BJT a small current flow from base-to-emitter results in a larger current flow from

For a BJT a small current flow from base-to-emitter results in a larger current flow from

[html]For a BJT a small current flow from base-to-emitter results in a larger current flow from

Katie32   37   1 Reply

elbrundo

Electrostatic discharge (ESD) can be defined as

Electrostatic discharge (ESD) can be defined as

[html]Electrostatic discharge (ESD) can be defined as  

▸ a short circuit.

▸ an overloaded circuit.

▸ the transfer of electrostatic charges between bodies at different potential.

▸ All of the answers are correct.

Nursesn   37   1 Reply

danterich

Digital circuits operate from

Digital circuits operate from

Digital circuits operate from

▸ sine-wave signals

▸ two-state signals

▸ analog signals.

▸ one-volt signals.

vnaust   23   1 Reply

harrison5692

An inverter

An inverter

An inverter

▸ changes an input of 0 to an output of 1.

▸ changes an input of 1 to an output of 0.

▸ never has more than one input and one output.

▸ All of the answers are correct.

dmalex13   28   1 Reply

naj2008h

A gate is a device that

A gate is a device that

[html]A gate is a device that

▸ will allow current flow in one direction only.

▸ performs a logical decision based on its inputs.

▸ will convert alternating current to direct current.

▸ performs a logical decision b

bennick   29   1 Reply

mooltipas

When a dual-voltage split-phase motor is operated at high voltage; the two run windings and the ...

When a dual-voltage split-phase motor is operated at high voltage; the two run windings and the ...

When a dual-voltage split-phase motor is operated at high voltage; the two run windings and the start winding are all connected in parallel.

▸ true

▸ false

makalisek   24   1 Reply

meowkitty813

To change the direction of rotation of a DC motor you must change the direction of the current flow ...

To change the direction of rotation of a DC motor you must change the direction of the current flow ...

To change the direction of rotation of a DC motor you must change the direction of the current flow through both the armature and the field.

▸ true

▸ false

aznmistyblue   25   1 Reply

dasneak

The synchronous speed of an AC motor is speed given on the motor's nameplate.

The synchronous speed of an AC motor is speed given on the motor's nameplate.

The synchronous speed of an AC motor is speed given on the motor's nameplate.

▸ true

▸ false

capriciossa   32   1 Reply

nenialinda

The starting and running windings of a split-phase motor has the same amount of inductive reactance.

The starting and running windings of a split-phase motor has the same amount of inductive reactance.

The starting and running windings of a split-phase motor has the same amount of inductive reactance.

▸ true

▸ false

kincasdce123   26   1 Reply

amie

The no-load speed of a series motor can increase to the point of damaging the motor.

The no-load speed of a series motor can increase to the point of damaging the motor.

The no-load speed of a series motor can increase to the point of damaging the motor.

▸ true

▸ false

Chocolate_Pie   26   1 Reply

yankeesaremyjam

The moment a motor is started, during the acceleration period, the motor draws a low inrush current.

The moment a motor is started, during the acceleration period, the motor draws a low inrush current.

The moment a motor is started, during the acceleration period, the motor draws a low inrush current.  

▸ true

▸ false

angad1983   22   1 Reply

CrazyW27

The commutator in a DC motor reverses armature coil current flow to produce continuous armature rotation.

The commutator in a DC motor reverses armature coil current flow to produce continuous armature rotation.

The commutator in a DC motor reverses armature coil current flow to produce continuous armature rotation.

▸ true

▸ false

apple321   32   1 Reply

bijin05

The base speed listed on a DC motors nameplate is an indication of how fast the motor will run with ...

The base speed listed on a DC motors nameplate is an indication of how fast the motor will run with ...

The base speed listed on a DC motor’s nameplate is an indication of how fast the motor will run with rated armature voltage and rated load amps at rated field current.

▸ true

▸ false

mhbtelc   30   1 Reply

chelz

The armature of a DC motor acts like a generator in producing counter electromotive fore (CEMF).

The armature of a DC motor acts like a generator in producing counter electromotive fore (CEMF).

The armature of a DC motor acts like a generator in producing counter electromotive fore (CEMF).

▸ true

▸ false

abdallaex   31   1 Reply

relisabeth

One of the features of a DC motor is that its speed can be easily controlled.

One of the features of a DC motor is that its speed can be easily controlled.

One of the features of a DC motor is that its speed can be easily controlled.

▸ true

▸ false

hellokidbye   30   1 Reply

whtsi_ep3

Interchanging any two power leads to a three-phase induction motor will not cause it to run in the ...

Interchanging any two power leads to a three-phase induction motor will not cause it to run in the ...

Interchanging any two power leads to a three-phase induction motor will not cause it to run in the reverse direction.

▸ true

▸ false

aramo023   33   1 Reply

coconut122

Increasing the voltage applied to the armature of a DC motor will cause its speed to decrease.

Increasing the voltage applied to the armature of a DC motor will cause its speed to decrease.

Increasing the voltage applied to the armature of a DC motor will cause its speed to decrease.

▸ true

▸ false

neezy   26   1 Reply

snowcat012

If power to the armature of a shunt motor is loss during operation the motor can accelerate to a ...

If power to the armature of a shunt motor is loss during operation the motor can accelerate to a ...

If power to the armature of a shunt motor is loss during operation the motor can accelerate to a dangerously high speed.

▸ true

▸ false

zitze   26   1 Reply

bjee231

For the three-phase stator winding shown, when three-phase current passes through the windings a ...

For the three-phase stator winding shown, when three-phase current passes through the windings a ...

[html]For the three-phase stator winding shown, when three-phase current passes through the windings a magnetic field is produced that travels around the inside of the stator core.

jonaschem16   34   1 Reply

moyo966

Failure to remove the starting windings of a split-phase motor from the circuit once the motor is ...

Failure to remove the starting windings of a split-phase motor from the circuit once the motor is ...

Failure to remove the starting windings of a split-phase motor from the circuit once the motor is running will cause the winding to char or burn out.

▸ true

▸ false

jack bopp   35   1 Reply

scmhack

Dynamic breaking of a three-phase motor is achieved by removing the AC power supply from the motor ...

Dynamic breaking of a three-phase motor is achieved by removing the AC power supply from the motor ...

Dynamic breaking of a three-phase motor is achieved by removing the AC power supply from the motor and applying direct current to one of the stator phases

▸ true

▸ false

whitywhite11   28   1 Reply

alexisgardner09

Decreasing field current to a DC motor will cause a motor to run slower.

Decreasing field current to a DC motor will cause a motor to run slower.

Decreasing field current to a DC motor will cause a motor to run slower.

▸ true

▸ false

salonijainnn   32   1 Reply

anikamazumder

Current flow in the rotor of a squirrel-cage induction motor establishes its own magnetic field, ...

Current flow in the rotor of a squirrel-cage induction motor establishes its own magnetic field, ...

Current flow in the rotor of a squirrel-cage induction motor establishes its own magnetic field, which interacts with the stator magnetic field to produce a torque.  

▸ true

▸ false

usha   33   1 Reply

Jaynie

Branch fuses or circuit breakers protect motor circuits against a short circuit or a ground fault.

Branch fuses or circuit breakers protect motor circuits against a short circuit or a ground fault.

Branch fuses or circuit breakers protect motor circuits against a short circuit or a ground fault.

▸ true

▸ false

Science220   32   1 Reply

mkql12

Alternating current motors require more routine maintenance than direct current motors.

Alternating current motors require more routine maintenance than direct current motors.

Alternating current motors require more routine maintenance than direct current motors.

▸ true

▸ false

js56154   29   1 Reply

kniemeier2

A three-phase induction motor sets up a rotating field that can start the motor, whereas a ...

A three-phase induction motor sets up a rotating field that can start the motor, whereas a ...

A three-phase induction motor sets up a rotating field that can start the motor, whereas a single-phase motor needs an auxiliary means of starting.

▸ true

▸ false

Sammyjoe1105   29   1 Reply

malgrextout

A thermal overload relay uses a heater connected in series with the motor supply.

A thermal overload relay uses a heater connected in series with the motor supply.

A thermal overload relay uses a heater connected in series with the motor supply.

▸ true

▸ false

coleshear   30   1 Reply

drdavid

A single-phase motor could be started by mechanically spinning the rotor and then quickly applying power.

A single-phase motor could be started by mechanically spinning the rotor and then quickly applying power.

A single-phase motor could be started by mechanically spinning the rotor and then quickly applying power.

▸ true

▸ false

freezo1994   41   1 Reply

Kmc14

A single-phase induction motor is smaller in size, for the same horsepower, than a three-phase motor.

A single-phase induction motor is smaller in size, for the same horsepower, than a three-phase motor.

A single-phase induction motor is smaller in size, for the same horsepower, than a three-phase motor.

▸ true

▸ false

mrtrombley92   39   1 Reply

London

A rotating magnetic field is the key to the operation of all AC motors.

A rotating magnetic field is the key to the operation of all AC motors.

A rotating magnetic field is the key to the operation of all AC motors.

▸ true

▸ false

Katie32   32   1 Reply

meowkitty813

The three-phase stator winding connection shown would be classified as a

The three-phase stator winding connection shown would be classified as a

[html]The three-phase stator winding connection shown would be classified as a

mitch44   24   1 Reply

wellsar