Hydraulics & Pneumatics Test Questions

Q.  What are different operations performed by PLC's?

a. Boolean logic
b. Timing
c. Arithmetic
d. all of the above


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  When PLC connections are used instead of electrical connections, the order of operations to be performed can be interchanged by
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MCQs:  Which of the following reasons make water unsuitable to use as a fluid in hydraulic systems? 1. Poor lubrication 2. High viscosity 3. More leakage 4. Quickly evaporates
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MCQs:  The heat generated in hydraulic systems can be absorbed by
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MCQs:  In sliding spool valves hydraulic fluid acts as sealant to reduce leakage
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MCQs:  For which of the following purpose hydraulic film acts as a seal between the machined cavity and spool?
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MCQs:  Which of the following statements are true? 1. Low viscosity fluids have higher leakage 2. High viscosity fluids have high pressure drop 3. Low viscosity fluids consume more power 4. Low viscosity leads to wear of components
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MCQs:  Pressure applied on a fluid in a container is equally distributed in all directions and acts with
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MCQs:  Which law explains the behavior of hydraulic fluids under pressure?
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MCQs:  Flow of oil in a pipe takes place due to
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MCQs:  Pressure drop in pipes, occurs due to
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MCQs:  How is laminar flow characterized in a straight pipe?
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MCQs:  Positive displacement pump used in hydraulic systems have
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MCQs:  Electric motor has a speed of 1200 rpm and output rate of pump is 6 cc/rev. Calculate flow rate of pump in l/min
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MCQs:  Calculate the power absorbed by the pump if, it has a flow rate of 20 cc/rev and develops a maximum pressure of 70 bar, when electric motor runs at a speed of 1200 rpm.
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MCQs:  Volumetric efficiency is the ratio of
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MCQs:  Which of the following is a hydrodynamic pump?
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MCQs:  What causes reduction in speed of the piston rod when the hydraulic cylinder is cushioned?
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MCQs:  Which of the following is a hydraulic cylinder based on application?
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MCQs:  What happens when supply of oil to a single acting cylinder is stopped?
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MCQs:  When does expansion of spring and retraction of cylinder take place in spring type single acting cylinder?
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