ELECTROPNEUMATIC CIRCUIT

Which type of coil is a solenoid?

• Electrical

• Chemical

• Mechanical

• Electromagnetic

Which of the following is the correct displacement diagram for a single acting cylinder, where 0 and 1 on the left hand side are initial and final positions of piston rod respectively and a, b, c are stages of extension and retraction?

• 
• 
• 
• 

How is proximity switch differentiated from limit switch?

• proximity switch is activated when non-moving parts have physical contact

• proximity switch is activated when moving parts have physical contact with it

• proximity switch is activated when moving parts are close to it

• none of the above

In electropneumatic circuits,

• Spool is shifted by signal air

• Spool is shifted by electromotive force

• Spool is shifted by control air

• All the above

Why are electromechanical relays more popular than solid state relays?

• a. they are reliable

• b. less costly

• both a and b

• None of the above

How is strong magnetic field in a solenoid achieved ?

• Strong magnetic field in a solenoid is achieved, if coil acts as conductor

• Coil is surrounded by a iron frame

• Iron core is placed at the center of the coil

• All the above

Find the Following symbol:

• Limit Switch

• Pressure Switch

• Temperature Switch

• Push button Switch

Find the Following symbol:

• Limit Switch

• Pressure Switch

• Push button Switch

• Temperature Switch

Find the Following symbol:

• Pressure Switch

• Push button Switch

• Limit Switch

• Temperature Switch

Find the Following symbol:

• Solenoid

• Relay

• Coil

• Timer