Explore topic-wise MCQs in Mechanical Engineering Questions.

This section includes 125 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.

51.

What is the phase difference, when the system is operated at excitation frequency ?
A. Phase difference is greater than 90°
B. Phase difference is less than 90°
C. Phase difference is zero
D. Unpredictable
Answer» D. Unpredictable
Discussion
52.

Calculate diameter of best wire for a Withworth thread of M 24 x 7 mm size.
A. 4.04 mm
B. 7.8 mm
C. 3.94 mm
D. 8.08 mm
Answer» D. 8.08 mm
Discussion
53.

What is/are the factor(s) causing runout?
A. Error of position
B. Error of bearings
C. Both a and b
D. None of the above
Answer» D. None of the above
Discussion
54.

Which type of deviation is observed while calculating hole dimensions?

A. Positive
B. Negative
C. Zero
D. All of the above
Answer» E.
Discussion
55.

Which type of light source is used in N.P.L. type of flatness interferometer?
A. Mercury vapour lamp
B. Cadmium lamp
C. Both a. and b.
D. None of the above
Answer» B. Cadmium lamp
Discussion
56.

Which type of surface in a fringe pattern exhibits the movement of fringes towards the centre?
A. concave surface
B. convex surface
C. Both A & B
D. None of these
Answer» B. convex surface
Discussion
57.

At which angle does a glass plate reflector set in N.P.L. interferometer?
A. 30°
B. 45°
C. 60°
D. 90°
Answer» C. 60°
Discussion
58.

Which of the following methods is unreliable to evaluate the surface finish?
A. Electrical stylus profilometer
B. Wallace surface dynamometer
C. Profilograph
D. Tomlinson surface tester
Answer» C. Profilograph
Discussion
59.

Which of the following strategies of Deming's fourteen points is included into category of Management commitment?

A. Institute leadership
B. Encouraging education
C. Eliminating exhortations
D. Adopting new philosophy
Answer» E.
Discussion
60.

Which principle does Taylor-Hobson-Talysurf tester work on?
A. Capacitive demodulating principle
B. Intensity modulating principle
C. Inductive modulating principle
D. Carrier modulating principle
Answer» E.
Discussion
61.

Which among the following depicts positive and negative relation between driving factor and performance factor?
A. Scatter diagram
B. histogram
C. check sheet
D. none of the above
Answer» B. histogram
Discussion
62.

A gear has 30 teeth with module 4 mm and pressure angle of 20°. Calculate length of base tangent in a gear over 7 teeth space.
A. 21.25 mm
B. 90.23 mm
C. 62.53 mm
D. None of the above
Answer» C. 62.53 mm
Discussion
63.

Which among the following is a pull type signaling system?
A. Just in time
B. Kanban
C. both a. and b.
D. none of the above
Answer» D. none of the above
Discussion
64.

Grade 1 is used in
A. high precision tasks
B. department of inspection
C. calibration of instruments
D. all of the above
Answer» C. calibration of instruments
Discussion
65.

Imperial standard yard is made of
A. platinum alloy
B. platinum iridium alloy
C. bronze
D. all of the above
Answer» D. all of the above
Discussion
66.

In which of the following length standards, parallax error is observed?
A. line standard
B. end standard
C. both a. and b.
D. none of the above
Answer» B. end standard
Discussion
67.

Which error is observed due to lack of squareness when depth is measured using depth micrometer?
A. parallax error
B. cosine error
C. sine error
D. all of the above
Answer» C. sine error
Discussion
68.

Testing flatness or straightness of a surface is possible using
A. vernier caliper
B. micrometer
C. autocollimator
D. all of the above
Answer» D. all of the above
Discussion
69.

Which of the following is true for interference fit?
A. Shaft is always smaller than the hole
B. Shaft is always bigger than the hole
C. Interference fits have shaft and hole of same dimension
D. None of the above
Answer» C. Interference fits have shaft and hole of same dimension
Discussion
70.

Which principle is used to measure distance in electronic comparator?
A. Frequency modulation
B. Radio oscillations
C. Both a. and b.
D. None of the above
Answer» D. None of the above
Discussion
71.

How is interference between shaft and hole calculated?
A. Interference = maximum shaft – minimum hole
B. Interference = minimum shaft – maximum hole
C. Interference = minimum shaft + maximum hole
D. None of the above
Answer» B. Interference = minimum shaft – maximum hole
Discussion
72.

Which among the following is used to create fringes in N.P.L. interferometer?
A. Condensing lens
B. Collimating lens
C. Optical flat
D. All of the above
Answer» D. All of the above
Discussion
73.

Which type of chart uses the rule of 20:80?
A. cause and effect chart
B. Pareto chart
C. fish bone diagram
D. control chart
Answer» C. fish bone diagram
Discussion
74.

Which of the following statements is true? 1. P and nP charts cannot use limit gauges 2. P charts are difficult to understand 3. P charts cannot recognize different degrees of defectiveness in units
A. Only 1
B. Only 2
C. Only 3
D. All the statements are true
Answer» D. All the statements are true
Discussion
75.

Which formula is used to calculate quality of performance?
A. Quality of performance = quality of design + quality of conformance
B. Quality of performance = quality of design - quality of conformance
C. Quality of performance = quality of design + availability
D. None of the above
Answer» B. Quality of performance = quality of design - quality of conformance
Discussion
76.

Which are the different techniques used by interpretation segments for interpretation?
A. frame grabber and frame store
B. template matching and weighting
C. thresholding and edge detection
D. all of the above
Answer» C. thresholding and edge detection
Discussion
77.

On operating characteristics curve, consumers risk is denoted by
A. α
B. β
C. γ
D. None of the above
Answer» C. γ
Discussion
78.

Which of the following is a characteristic of End standard?
A. accuracy of ± 0.2 mm
B. accuracy of ± 0.050 mm
C. accuracy of ± 0.001 mm
D. accuracy of ± 1.00 mm
Answer» D. accuracy of ± 1.00 mm
Discussion
79.

Which among the following is measured using four ball method?
A. Diameter
B. Length
C. Angle
D. All of the above
Answer» B. Length
Discussion
80.

Which of the following statements is/are true? 1. Probability of acceptance decreases if acceptance number increases, when sampling size is kept constant 2. Indifferent quality range is the range between lot tolerance percent defective and acceptable quality level 3. Operating characteristics curve is the curve plotted between probability of acceptance and indifferent quality range
A. Only 1
B. Only 2
C. Only 3
D. All the above statements are true
Answer» C. Only 3
Discussion
81.

Which ISO standard is used in international automobile companies to set automotive quality system standards ?
A. ISO 14000
B. TS 16949
C. ISO 9000
D. none of the above
Answer» C. ISO 9000
Discussion
82.

ISO 14000 quality standard is related with
A. Environmental management systems
B. Automotive quality standards
C. Eliminating poor quality
D. Customer satisfaction
Answer» B. Automotive quality standards
Discussion
83.

What is the function of frame grabber?
A. It stores the obtained data
B. It converts digital words to analog voltage levels
C. It converts analog voltage levels to digital words
D. All of the above
Answer» D. All of the above
Discussion
84.

What is ten point height method?
A. It is the average sum of ten highest points measured within sampling length
B. It is the average difference of five highest points and five deepest valleys measured within sampling length
C. It is the sum of ten highest points divided by sum of ten deepest valleys measured within sampling length
D. It is the average sum of five highest points and five deepest valleys measured within sampling length
Answer» C. It is the sum of ten highest points divided by sum of ten deepest valleys measured within sampling length
Discussion
85.

What effect does pitch error have on nut and bolt?
A. Major diameter of nut decreases and effective diameter of bolt increases
B. Effective diameter of nut decreases and effective diameter of bolt increases
C. Effective diameter of nut increases and effective diameter of bolt decreases
D. None of the above
Answer» C. Effective diameter of nut increases and effective diameter of bolt decreases
Discussion
86.

Analytical checking of gears includes checking of
A. tooth profile
B. vibrations
C. noise level
D. all of the above
Answer» B. vibrations
Discussion
87.

Which formula is used to calculate diametral pitch?
A. (number of teeth) x (pitch circle diameter)
B. (pitch circle diameter) / (number of teeth)
C. (number of teeth) / (pitch circle diameter)
D. none of the above
Answer» D. none of the above
Discussion
88.

According to Taylor's principle which type of gauge checks both size and geometric features?
A. Go gauge
B. No go gauge
C. Both a. and b.
D. None of the above
Answer» B. No go gauge
Discussion
89.

Which of the following is the limitation of Quality circle?
A. higher cost
B. training time and cost
C. development of leadership
D. all of the above
Answer» C. development of leadership
Discussion
90.

Quality improvement planning is related to which category of cost?
A. Cost of failure
B. Cost of appraisal
C. Cost of prevention
D. All of the above
Answer» D. All of the above
Discussion
91.

Inadvertent errors are caused due to
A. improper timely feedback
B. less knowledge about the product
C. less information
D. all of the above
Answer» E.
Discussion
92.

In image shearing techniques, what is meant by single shear?
A. In single shear technique, two images have edge to edge contact and later on one image is shifted some distance over the other
B. In single shear technique, one image is shifted some distance till an edge to edge contact is established
C. Both A & B
D. None of these
Answer» B. In single shear technique, one image is shifted some distance till an edge to edge contact is established
Discussion
93.

Which control chart pattern is/are used for assignable causes?
A. Trend pattern
B. Shift pattern
C. Extreme variation pattern
D. All of the above
Answer» E.
Discussion
94.

Waterfall method is observed in
A. product design and development
B. quality circle
C. brain storming
D. flow chart
Answer» B. quality circle
Discussion
95.

Which dimensions can be measured using image shearing microscope?
A. linear dimensions
B. angular dimensions
C. both linear and angular dimensions
D. none of the above
Answer» B. angular dimensions
Discussion
96.

What is meant by P, D, S and A in PDSA cycle?
A. Progress Development Study Act
B. Plan Do Study Act
C. Project Development Study Act
D. Prevention Do Study Act
Answer» C. Project Development Study Act
Discussion
97.

Which among the following is used to measure velocity of an object?
A. Laser Doppler effect
B. Laser interferometers
C. Laser telemetric system
D. None of the above
Answer» B. Laser interferometers
Discussion
98.

Which of the following statements is/are true according to Deming's Deadly Diseases?
A. short term profits are very useful for long term goals
B. mobility of management leads to stability
C. merit rating leads to devastating
D. all of the above
Answer» D. all of the above
Discussion
99.

Which of the following statements is/are true for sampling inspection?
A. Acceptance sampling does not involve any risk
B. Characteristics of the entire lot can be truly specified
C. Less fatigue results in less mistakes
D. All the above statements are true
Answer» D. All the above statements are true
Discussion
100.

What is capability ratio?
A. The ratio of process capability and number of units inspected
B. The ratio of specification range and process capability
C. The ratio of number of defectives and process capability
D. The ratio of number of defectives and number of units inspected
Answer» C. The ratio of number of defectives and process capability
Discussion