Hydraulic Machines Mcqs

Q:

A pneumatic sewage ejector includes a tank for holding _________

A) Fluid sewage B) Horizontally sewage
C) Axial sewage D) Radial sewage
 
Answer & Explanation Answer: A) Fluid sewage

Explanation: A pneumatic sewage ejector includes a tank for holding fluid sewage.

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22
Q:

The injection pumps used in most diesel engines can create up to ________

A) 300 psi B) 3000 psi
C) 30000 psi D) 3 psi
 
Answer & Explanation Answer: C) 30000 psi

Explanation: The injection pumps used in most diesel engines can create up to 30000 psi. It needs to maintain at this pressure in order to operate the fuel injectors.

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24
Q:

A pump that has low suction and moderate discharge is called _______

A) Froth pumps B) Air lift pumps
C) Reciprocating pumps D) Centrifugal pumps
 
Answer & Explanation Answer: B) Air lift pumps

Explanation: A pump that has low suction and moderate discharge is called air lift pumps. These pumps have a moderate discharge with liquid and entrained solids.

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26
Q:

The pressure generated by a counterweight gear pump is ______

A) 1200 psi B) 1300 psi
C) 1400 psi D) 1500 psi
 
Answer & Explanation Answer: C) 1400 psi

Explanation: The pressure given out by a counterweight gear pump is 1400 psi. The counterweights are installed to restrict the crane from tipping. A hydraulic lift is used to add or remove them from their place.

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25
Q:

_______ restricts the crane from tipping.

A) Gear B) Indicator
C) Counterweights3 D) Boom
 
Answer & Explanation Answer: C) Counterweights3

Explanation: Counterweights restricts the crane from tipping when the lifts take place. They are multi-ton weights. They are usually positioned in the rear side of the cab.

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16
Q:

________ allows the rotation of the boom.

A) Rotex gear B) Jib
C) Motor D) Pump
 
Answer & Explanation Answer: A) Rotex gear

Explanation: Rotex gear allows the rotation of the boom. It is a very large sized gear that is placed under the cab. It provides mobility to the boom.

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22
Q:

Out of the ________ a lattice structure called jib projects out.

A) Boom B) Pump
C) Gear D) Out-triggers
 
Answer & Explanation Answer: A) Boom

Explanation: Out of the boom, the jib projects out. It is a lattice structure that provides support to the boom. It is an essential component of the boom.

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16
Q:

________ helps in indicating the maximum lifting limit of the crane.

A) Jib B) Gear
C) Shaft D) Load moment indicator
 
Answer & Explanation Answer: D) Load moment indicator

Explanation: Load moment indicator helps in indicating the maximum lifting limit of the crane. It is a set of lights. These lights start flashing when the maximum limit is reached, thereby indicating a precaution.

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