Explore topic-wise MCQs in Mechanical Engineering.

This section includes 382 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

351.

In Electro discharge machining, materials with low melting point have which type of material removal rate?

A. very low
B. low
C. medium
D. high
Answer» E.
Discussion
352.

Conicity resulting after machining by Ultrasonic Machining can be reduced by?

A. direct injection of slurry
B. tools having negative taper
C. high static pressure
D. all of the mentioned
Answer» E.
Discussion
353.

In Abrasive water jet machining, intensifier is used to deliver which type of pressure?

A. very low pressure
B. low pressure
C. medium pressure
D. high pressure
Answer» E.
Discussion
354.

Which of the following come under the process parameters of the Abrasive water jet machining?

A. abrasive size
B. machine impact angle
C. traverse speed
D. all of the mentioned
Answer» E.
Discussion
355.

Which of the following components, influence the material removal rate in Abrasive jet machining?

A. nozzle
B. carrier gas
C. abrasive grains
D. all of the mentioned
Answer» E.
Discussion
356.

In machining system of AJM, which is the medium of carrying the abrasive grains for machining?

A. liquids
B. gases
C. any fluids
D. none of the mentioned
Answer» C. any fluids
Discussion
357.

Which of the following property/ies of nozzle does not affect the material removal rate in Water jet machining?

A. material
B. diameter
C. outside temperature
D. stand-off distance
Answer» D. stand-off distance
Discussion
358.

10 – 0.30 mm.

A. 0.1 – 1 mm
B. 1 – 2 mm
C. 2 – 6 mm
D. 6 – 14 mm
Answer» D. 6 – 14 mm
Discussion
359.

Distance between which components, is the stand-off distance?

A. nozzle-inlet and work piece top
B. nozzle-outlet and work piece-top
C. nozzle-inlet and work piece-bottom
D. nozzle-outlet and work piece-bottom
Answer» C. nozzle-inlet and work piece-bottom
Discussion
360.

Which of the following does not damage the nozzle used in Water jet machining?

A. particles of dirt
B. mineral deposits
C. water
D. all of the mentioned
Answer» D. all of the mentioned
Discussion
361.

What are the uses of catcher in machining system of Water jet machining?

A. collecting dirt
B. collection of debris
C. reduce noise levels
D. all of the mentioned
Answer» E.
Discussion
362.

What is the expected life of the nozzles used in WJM?

A. 10 hrs
B. 20 hrs
C. 100 hrs
D. 200 hrs
Answer» E.
Discussion
363.

What are the values of typical tube diameters in the machining system in WJM?

A. 0.1 to 1 mm
B. 1 to 6 mm
C. 6 to 14 mm
D. 14 to 25 mm
Answer» D. 14 to 25 mm
Discussion
364.

On which property of water, will the accumulator in Water jet machining rely on?

A. density
B. compressibility
C. viscosity
D. velocity
Answer» C. viscosity
Discussion
365.

Which of the following are the components of intensifier present in water jet machining system?

A. piston
B. plunger
C. limit switch
D. all of the mentioned
Answer» E.
Discussion
366.

What is the general power rating of the hydraulic pump, used in WJM?

A. 10 kw
B. 20 kw
C. 30 kw
D. 40 kw
Answer» D. 40 kw
Discussion
367.

Which of the following is not a part of machining system of Water jet machining?

A. transducer
B. accumulator
C. jet cutting nozzle
D. hydraulic pump
Answer» B. accumulator
Discussion
368.

What is the velocity of water jet stream in water jet machining?

A. 100 m/sec
B. 300 m/sec
C. 700 m/sec
D. 900 m/sec
Answer» E.
Discussion
369.

Which of the following is an example of hybrid machining?

A. ultrasonic machining
B. electron beam machining
C. ultrasonic assisted electrochemical machining
D. laser beam machining
Answer» D. laser beam machining
Discussion
370.

What is the key element of water jet machining for material removal?

A. tool holder
B. work piece
C. water jet
D. power source
Answer» D. power source
Discussion
371.

In chemical machining is material removal takes by?

A. chemical reaction
B. erosion
C. electron removal
D. none of the mentioned
Answer» B. erosion
Discussion
372.

What is the full form of WJM in advanced machining processes?

A. water jack manufacturing
B. water jet machining
C. water jet manufacturing
D. water jack manufacturing
Answer» C. water jet manufacturing
Discussion
373.

Vacuum is the machining medium for

A. lbm
B. wjm
C. ebm
D. none of the mentioned
Answer» B. wjm
Discussion
374.

Sources used in thermal machining are

A. ions
B. plasma
C. electrons
D. all of the mentioned
Answer» E.
Discussion
375.

Surface defects that may be occurred during thermal machining are

A. micro cracking
B. heat affected zones
C. striations
D. all of the mentioned
Answer» E.
Discussion
376.

Which of the following process comes under mechanical machining?

A. usm
B. edm
C. lbm
D. pam
Answer» B. edm
Discussion
377.

Material in thermal machining is removed by which of the following means?

A. vaporization
B. melting
C. electro-plating
D. all of the mentioned
Answer» E.
Discussion
378.

In mechanical machining, material is removed by

A. erosion
B. corrosion
C. abrasion
D. vaporization
Answer» B. corrosion
Discussion
379.

Different classifications of Non-traditional machining based on source of energy are

A. mechanical
B. thermal
C. chemical and electro-chemical.
D. all of the mentioned
Answer» E.
Discussion
380.

In which of the following industries, Non-traditional machining methods play an important role?

A. automobile
B. aerospace
C. medical
D. all of the mentioned
Answer» E.
Discussion
381.

Non-Traditional machining can also be called as

A. contact machining
B. non-contact machining
C. partial contact machining
D. half contact machining
Answer» C. partial contact machining
Discussion
382.

Non-Traditional machining is recommended when we need which of the following features?

A. complex shapes
B. high surface quality
C. low-rigidity structures
D. all of the mentioned
Answer» E.
Discussion