Refer to the figure Shown below. Where is the coil of control relay 1 connected?

Refer to the figure Shown below. Where is the hold contact relay connected?

Refer to the figure Shown below. Where is the contact of timing relay connected?

Where is the solenoid 1 connected?

Refer to the figure Shown below. What is the device used to releasing and returning the relay to its original condition?

Refer to the figure Shown below. What will happen If PB ON is Pressed and released?

Refer to the figure Shown below. What will happen If PB OFF is pressed?

Refer to the figure Shown below. How to energize the solenoid?

Refer to the figure Shown below. How to de- energize the solenoid?

What type of relay often serves as a memory device in case of power failure?

The latch mechanically holds the contacts when the latch coil is de-energized is___________

How can the solenoid be de-energized after it has been energized?

What is the timer in the Agastat time delay relay, which works by adjusting the size of an opening to control the time needed for air to pass from one container to another?

What is the timer are used when plant equipment has cycling (on-off) and set sequence of operation?

What is the type of timer .which operates on direct current on plants they are generally replaced rather than repaired?

What is the type of timer used in synchronous motor run at the line frequency?

What is the type of timer which open or close circuit after a specified time?

What is the type of timer used on an oven or clothes dryer operates in sync with the line frequency of the ac power source?

What type of relay, which is mechanical held in position and no current flows through the operating coils after switching?

What type of circuit used to call attention to equipment failure or upset condition in a plant process which is either visual or audible?

What holds the latching relay contacts in position when the circuit is de-energized?

What type of relay has a mechanism which mechanically holds the contact even if it's coil is de-energized?

What type of control circuit provides low voltage / no voltage protection for 3-phase motors?

What type of control circuit provides no low voltage I no voltage protection for 3-phase motors ?

What is the special safety device which prevents two parts of the circuit from being energized at the same time?

What type of logic function where two or more switches connected in series with the load?

What type of logic function where two or more switches connected in parallel with the load?

What type of logic function where a normally closed push button is connected to a load?

What type of logic function where a circuit is able to keep the load energized after the control signal is removed?

What type of logic function to keep the load remains energized when there is no control signal?

Refer to the figure below, What type of logic function?

Refer to figure below, What type of logic function?

Refer to the figure below, What type of logic function?

Refer to the figure below, What type of logic function?

Refer to the figure below, What type of logic function?

Refer to the figure below, What type of logic function in Starting circuit?

Refer to the figure , What type of logic function in Stopping circuit?

Refer to figure below, What type of logic function AND ?

Refer to figure below, What type of logic function NOT ?

Refer to figure below, What type of logic function OR ?

Refer to figure below, What type of logic function MEMORY ?

Refer to figure below. Identify the problem in control circuit if the voltmeter reading (Zero V)?

Refer to figure below. Identify the problem in control circuit if the voltmeter reading (Zero V)?

Refer to figure below. Identify the problem in control circuit if the voltmeter reading (Zero V)?

What will be the expected voltmeter reading at the test point shown in figure if the contact is good and no breaks on conductor ?

Refer to figure below. The control circuit supply 220 V. When the push button , the voltage measured (Zero Volt)

Refer to figure below. If the resistance of the coil is 50Ω is operating correctly, but the Ohmmeter reading is less than 50 Ω . What does it tells you?

Refer to figure below. If the resistance of the coil is 50Ω is operating correctly, but the Ohmmeter reading is Infinity Ω or ( OL ). What does it tells you?

What is the Part of a manual 3-Phase starter; this operates the contact mechanism from a toggle switch or push button?

What is the Part of a manual 3-Phase starter, it protects motors against continual high starting current and heavy overloads?

How to reset manual starter, after its overload relay opens?

On a manual starter, when does the overload relay opens its contacts

The bimetallic strip in a snap action overload relay is formed into a_________________

Refer the figure below what type of thermal overload relay?

The bimetallic strip in a snap action overload relay when temperature increases

the disc moves _________________

The bimetallic strip in a snap action overload relay what happen if used to make break large current needing fast overload response?

What happens to a bimetallic strip when it is heated?

What is the main part of melting alloy the heater of this overload relay is the?

In the melting alloy overload relay there is a part called ratchet wheel pin, what is the other name for it?

When excessive current passes through the heater coil it get hot of melting alloy overload relay causes heating the ____________________

When excessive current passes through the heater coil it heating the outer tube and gets hot to ____________________ of melting alloy overload relay

When excessive current passes through the heater coil it heating the outer tube and gets hot to alloy melts cause__________________________ of melting alloy overload relay