week1_pdf3

Requirements of an actuator

• Control signal

• Energy source

• Control signal and Energy source

• none

Which power is used for mechanical operation

• Hydraulic power

• Electrical power

• Mechanical power

• None of the above

Liquids are

• incompressible

• compressible

• colorless

• both a and b

How many types of Actuator are there

• 4

• 5

• 6

• 3

Pneumatic actuator converts the signal into

• linear motion

• oscilatory motion

• uniform motion

• periodic motion

Hydraulic actuator consists of

• rotor

• magnet

• cylinder

• bearings

Electric actuator converts electrical energy into

• control signal

• mechanical motion

• mechanical torque

• electromagnetic signal

Which is used in valves to control the water pipes in pneumatic actuator

• solenoid

• pinion

• Both

• none of the above

Which type of output signal do digital sensors produce

• Analog signal

• Continuous signal

• Non continuous signal

• Variable signal

In scalar sensors, how is the output signal related to the quantity being measured

• It depends only on direction

• It is binary (1 or 0)

• It is proportional to both magnitude and direction

• It is generally proportional to magnitude