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MD ELEMENTS PER 50 > E4_51-100 > Flashcards

E4_51-100 Flashcards

1
Q
  1. A line passing through the pitch point that is tangent to both base circles of a gear is:

A. Pressure line
B. Perpendicular line
C. Tangent line
D. Center line

A

A. Pressure line

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2
Q
  1. Which of the following is the contact ratio for a good gear design?

A. 1.5 : 1
B. 1 : 1.3
C. 1 : 3
D. 1.2 : 2

A

A. 1.5 : 1

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3
Q
  1. In pressure vessels, which of the following resists internal pressure through tension?

A. Shell-type element
B. Cam type element
C. Plate-type element
D. Spherical type element

A

A. Shell-type element

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4
Q
  1. It is the study of the body’s motion independent of the forces on the body.

A. Kinetics
B. Dynamics
C. Kinematics
D. Mechanics

A

C. Kinematics

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5
Q
  1. What is the reciprocal of the velocity ratio?

A. Train value
B. Ratio factor
C. Modular value
D. None of these

A

A. Train value

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6
Q
  1. It is a type of bolt finished all over and has usually having coarse threads.

A. Coupling bolt
B. Stud bolt
C. Machine bolt
D. Automobile bolt

A

A. Coupling bolt

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7
Q
  1. It is a type of bolt distinguished by a short portion of the shank underneath the head being square or finned or ribbed.

A. Coupling bolt
B. Stud bolt
C. Machine bolt
D. Carriage bolt

A

D. Carriage bolt

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8
Q
  1. It is a type of bolt threaded on both ends and can be used where a through bolt impossible.

A. Coupling bolt
B. Carriage bolt
C. Stud bolt
D. Machine bolt

A

C. Stud bolt

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9
Q
  1. Which of the following is not a type of bolt?

A. Stud bolt
B. Steel bolt
C. Machine bolt
D. Coupling bolt

A

B. Steel bolt

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10
Q
  1. It is a locking device that is used to maintain pressure between threads of the bolt and nut.

A. Gasket
B. Lock washer
C. Lock nuts
D. Filler

A

B. Lock washer

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11
Q
  1. In the list of process given below, the chip removal process is the

A. Die casting
B. Extruding
C. Forging
D. Broaching

A

D. Broaching

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12
Q
  1. The twist drill has its point thinned in order to

A. Reduce the hole diameter
B. Increase the rake angle
C. Locate in the center punch mark
D. Reduce the axial pressure

A

D. Reduce the axial pressure

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13
Q
  1. In the list of process given below, the non-chip removal process is

A. Grinding
B. Spinning on lathe
C. Thread cutting
D. Milling

A

B. Spinning on lathe

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14
Q
  1. A reamer is used to correct the

A. Size and roundness of a drilled hole
B. Size and position of a drilled hole
C. Finish and position of a drilled hole
D. Finish and depth of a drilled hole

A

A. Size and roundness of a drilled hole

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15
Q
  1. An oversize hole is produced by a drill if

A. Lips of drill are of unequal length
B. Feed is too high
C. Insufficient coolant is used
D. Cutting speed is too high

A

A. Lips of drill are of unequal length

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16
Q
  1. Cemented carbide tipped tools can machine metal even when their cutting elements get heated up to a temperature of

A. 1650oC
B. 1000oC
C. 1400oC
D. 1800oC

A

B. 1000oC

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17
Q
  1. Cemented carbide tools are usually provided with:

A. Positive back rake angle
B. Neutral back rake angle
C. Negative back rake angle
D. None of these

A

C. Negative back rake angle

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18
Q
  1. The point angle of twist drill to machine is

A. 112o
B. 116o
C. 118o
D. 120o

A

C. 118o

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19
Q
  1. The cutting speed of HSS twist drill to machine gray cast iron is

A. 10 – 20 m/min
B. 15 – 25 m/min
C. 20 – 30 m/min
D. 25 – 40 m/min

A

D. 25 – 40 m/min

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20
Q
  1. The recommended value of rake angle for machining aluminum with cutting tools made up of diamond tool.

A. 0o
B. 15o
C. 35o
D. 45o

A

A. 0o

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21
Q
  1. What is the large wood screw used to fasten machinery and equipment?

A. Lag screw
B. Loss screw
C. Wood screw
D. Cross screw

A

A. Lag screw

22
Q
  1. What is the overall length of the spring when it is compressed until all adjacent coils touched?

A. Free length
B. Solid length
C. Compressed length
D. Expansion length

A

B. Solid length

23
Q
  1. What is the minimum length of contact in a tapped hole for cast iron?

A. 1.7 D
B. 1.5 D
C. 1.2 D
D. 2.1 D

A

B. 1.5 D

24
Q
  1. It is the ratio of the mean diameter of coil over the coil diameters.

A. Wahl factor
B. Spring index
C. Coil ratio
D. Lead scale

A

B. Spring index

25
Q
  1. It is the length of a coil spring under no load.

A. Compressed length
B. Free length
C. Solid height
D. None of these

A

B. Free length

26
Q
  1. In general, the steel springs are made of relatively or relative high carbon steel usually:

A. 5%
B. Less than 0.5%
C. More than 0.5%
D. 7.5%

A

C. More than 0.5%

27
Q
  1. It is a low cost spring material suitable where service is not severe and dimensional precision is not needed.

A. Helical spring wire
B. Stainless steel
C. Hard drawn wire spring
D. Copper

A

C. Hard drawn wire spring

28
Q
  1. What is the hard drawn (80% reduction) spring wire made of high carbon steel?

A. Oil tempered wire
B. Music wire
C. Tension wire
D. Chromium wire

A

B. Music wire

29
Q
  1. Which of the following wires with good quality and is used for impact loading?

A. Hard drawn wire
B. Song wire
C. Helical spring wire
D. Chromium-silicon wire

A

D. Chromium-silicon wire

30
Q
  1. When heated-treated wire is coiled cold, It should be stress relieved for bending stress and after cooling is heated at some:

A. 4000F
B. 6000F
C. 7000F
D. 5000F

A

D. 5000F

31
Q
  1. The cutting speeds of HSS milling cutter to machine aluminum is

A. 140 – 200 m/min
B. 160 – 220 m/min
C. 180 – 240 m/min
D. 200 – 260 m/min

A

C. 180 – 240 m/min

32
Q
  1. The major factors, which determine the rpm of milling cutter, are the material being cut and the ________.

A. Number of teeth in cutter
B. Diameter of cutter
C. Time allowed to complete the job
D. Depth of cutter

A

C. Time allowed to complete the job

33
Q
  1. Friction between chip and tool may be reduced by

A. Increased sliding
B. Increased shear angle
C. Use of low tool finish
D. None of these

A

A. Increased sliding

34
Q
  1. The studs used as a coolant machine shop consists of

A. Solution of detergent and water
B. A straight mineral oil
C. An emulsion of oil and water
D. A chemical solution

A

C. An emulsion of oil and water

35
Q
  1. The recommended value of rake angle for machine aluminum with cutting tools made up of high speed steel tool.

A. 5o
B. 10o
C. 15o
D. 35o

A

D. 35o

36
Q
  1. Milling cutter is sharpened on

A. Tool and cutter grinder
B. Cylindrical grinder
C. Centerless grinder
D. Surface grinder

A

A. Tool and cutter grinder

37
Q
  1. Electron beam machining process is quite suitable for a material having

A. High melting point and high thermal conductivity
B. High melting point and low thermal conductivity
C. Low melting point and low thermal conductivity
D. Low melting point and high thermal conductivity

A

B. High melting point and low thermal conductivity

38
Q
  1. A process can be considered as a hot working process if the material is heated.

A. Below recrystallization temperature
B. Above rescrystallization temperature
C. Below normal temperature
D. Above normal temperature

A

B. Above rescrystallization temperature

39
Q
  1. Grinding is

A. Metal fusing operation
B. Metal powdering operation
C. Metal finishing operation
D. None of these

A

C. Metal finishing operation

40
Q
  1. Grinding is done wherever

A. Other machining operation cannot be carried out
B. A large amount of material is to be removed
C. High accuracy is required
D. None of these

A

C. High accuracy is required

41
Q
  1. Which of the following is not a function of spring?

A. Absorbs energy
B. Source of potential energy
C. Measure weight
D. Measure thickness

A

D. Measure thickness

42
Q
  1. Which of the following is the type of spring made in the form of dished washer?

A. Air spring
B. Bellevile spring
C. Volute spring
D. Motor spring

A

B. Bellevile spring

43
Q
  1. What is the type of failure due to unstability?

A. Buckling
B. Slenderness ratio
C. Stability
D. Euler’s failure

A

A. Buckling

44
Q
  1. What type of formula that is best applied to a very slender column?

A. Column formula
B. Slenderness formula
C. Moment formulas
D. Euler formula

A

D. Euler formula

45
Q
  1. If two principal stresses is zero, the state of stress is:

A. Biaxial
B. Mono-axial
C. Uniaxial
D. Biaxial

A

C. Uniaxial

46
Q
  1. What do you call the system that has finite values of principal stresses?

A. Triaxial
B. Uniaxial
C. Mono-axial
D. Biaxial

A

A. Triaxial

47
Q
  1. A screw that requires positive torque to lower the load or to loosen the screw if it has been turned tight against a resistance.

A. Self locking screw
B. Lock screw
C. Self screw
D. Power screw

A

D. Power screw

48
Q
  1. What is the rotating member used in transmitting power?

A. Shaft
B. Counter shaft
C. Axle
D. Washer

A

A. Shaft

49
Q
  1. For machinery shafts, the permissible deflection is approximately:

A. 0.02 in./ft
B. 0.03 in./ft
C. 0.01 in/ft
D. 0.05 in./ft

A

A. 0.02 in./ft

50
Q
  1. For shafts, the shear due to bending is a maximum at the neutral plane where the normal stress is:

A. Minimum
B. Constant
C. Maximum also
D. Zero

A

D. Zero

MD ELEMENTS PER 50 (10 decks)

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