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MCQOPTIONS
This section includes 4791 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 2751. |
Stellite preserve hardness upto a temperature of |
| A. | 350 C |
| B. | 500 C |
| C. | 900 C |
| D. | 1100 C |
| Answer» E. | |
| 2752. |
The rake angle of a single point cutting tool corresponds to __________ of a twist drill. |
| A. | lip clearance angle |
| B. | helix angle |
| C. | point angle |
| D. | chisel edge angle |
| Answer» C. point angle | |
| 2753. |
The top and sides of the table of a shaper usually have |
| A. | L-type slots |
| B. | T-type slots |
| C. | I-type slots |
| D. | any one of these |
| Answer» C. I-type slots | |
| 2754. |
High speed steel tools retain their hardness upto a temperature of |
| A. | 250 C |
| B. | 350 C |
| C. | 500 C |
| D. | 900 C |
| Answer» E. | |
| 2755. |
The binding material used in cemented carbide tools is |
| A. | tungsten |
| B. | chromium |
| C. | silicon |
| D. | cobalt |
| Answer» E. | |
| 2756. |
The helix angle of a drill is more than 30 for drilling aluminium. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 2757. |
In centreless grinders, the maximum angular adjustment of the regulating wheel is |
| A. | 5 |
| B. | 10 |
| C. | 15 |
| D. | 20 |
| Answer» C. 15 | |
| 2758. |
The surface finish is improved by the increase in |
| A. | cutting speed |
| B. | nose radius |
| C. | true rake angle |
| D. | all of these |
| Answer» E. | |
| 2759. |
The cutting speed for drilling copper with high speed steel drills varies from |
| A. | 10 to 20 m/min |
| B. | 18 to 30 m/min |
| C. | 24 to 45 m/min |
| D. | 60 to 90 m/min |
| Answer» C. 24 to 45 m/min | |
| 2760. |
In machining metals, chips break due to __________ of work material. |
| A. | toughness |
| B. | ductility |
| C. | elasticity |
| D. | work hardening |
| Answer» E. | |
| 2761. |
The factor which affects the tool life is |
| A. | tool geometry |
| B. | cutting speed |
| C. | feed rate |
| D. | all of these |
| Answer» E. | |
| 2762. |
In lapping operaion, the amount of metal removed is |
| A. | 0.005 to 0.01 mm |
| B. | 0.01 to 0.1 mm |
| C. | 0.05 to 0.1 mm |
| D. | 0.5 to 1 mm |
| Answer» B. 0.01 to 0.1 mm | |
| 2763. |
The cutting force in up milling __________ per tooth movement of the cutter. |
| A. | is zero |
| B. | is maximum |
| C. | decreases from maximum to zero |
| D. | increases from zero to maximum |
| Answer» E. | |
| 2764. |
The height of each tooth of a broach is |
| A. | same throughout |
| B. | in progressively decreasing order |
| C. | in progressively increasing order |
| D. | none of these |
| Answer» D. none of these | |
| 2765. |
A right hand tool on a lathe cuts most efficiently when it travels |
| A. | from left to right end of the lathe bed |
| B. | from right to left end of the lathe bed |
| C. | with the help of a compound slide |
| D. | across the bed |
| Answer» C. with the help of a compound slide | |
| 2766. |
For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of |
| A. | 50 C |
| B. | 100 C |
| C. | 175 C |
| D. | 275 C |
| Answer» C. 175 C | |
| 2767. |
Climb milling is chosen while machining because |
| A. | the chip thickness increase gradually |
| B. | it enables the cutter to dig in and start the cut |
| C. | the specific power consumption is reduced |
| D. | better surface finish can be obtained |
| Answer» C. the specific power consumption is reduced | |
| 2768. |
The material which on machining produces chips with built up edge is |
| A. | brittle material |
| B. | tough material |
| C. | hard material |
| D. | ductile material |
| Answer» E. | |
| 2769. |
In down milling, the thickness of chip is |
| A. | minimum at the beginning of the cut and maximum at the end of the cut |
| B. | maximum at the beginning of the cut and minimum at the end of the cut |
| C. | uniform throughout the cut |
| D. | none of these |
| Answer» C. uniform throughout the cut | |
| 2770. |
In which of the following milling machine, the table can be tilted in a vertical plane by providing a swivel arrangement at the knee? |
| A. | Universal milling machine |
| B. | Plain milling machine |
| C. | Omniversal milling machine |
| D. | Hand milling machine |
| Answer» D. Hand milling machine | |
| 2771. |
A coarse grained grinding wheel is used to grind |
| A. | hard and brittle materials |
| B. | soft and ductile materials |
| C. | hard and ductile materials |
| D. | soft and brittle materials |
| Answer» C. hard and ductile materials | |
| 2772. |
The abrasive slurry used in ultra-sonic machining contains fine particles of |
| A. | aluminium oxide |
| B. | boron carbide |
| C. | silicon carbide |
| D. | any one of these |
| Answer» E. | |
| 2773. |
The size of abrasive grain required in a grinding wheel depends upon the |
| A. | amount of material to be removed |
| B. | hardness of material being ground |
| C. | finish desired |
| D. | all of these |
| Answer» C. finish desired | |
| 2774. |
The trade name of a non-ferrous cast alloy composed of cobalt, chromium and tungsten is called |
| A. | ceramic |
| B. | stellite |
| C. | diamond |
| D. | cemented carbide |
| Answer» C. diamond | |
| 2775. |
A dense structure of a grinding wheel is used for |
| A. | hard materials |
| B. | brittle materials |
| C. | fnishing cuts |
| D. | all of these |
| Answer» E. | |
| 2776. |
The keyways, grooves and slots cannot be cut on a shaper. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2777. |
The tap used to cut threads in a blind hole is |
| A. | taper tap |
| B. | second tap |
| C. | bottoming tap |
| D. | any one of these |
| Answer» D. any one of these | |
| 2778. |
A 15 mm drilling machine means that it can drill a hole |
| A. | of maximum diameter 15 mm |
| B. | in 15 mm thick plates |
| C. | having cross-sectional area of 15 mm |
| D. | <sup>2</sup> |
| E. | none of these |
| Answer» B. in 15 mm thick plates | |
| 2779. |
A jig is defined as a device which |
| A. | holds and locates a workpiece and guides and controls one or more cutting tools |
| B. | holds and locates a workpiece during an inspection or for a manufacturing operation |
| C. | is used to check the accuracy of workpiece |
| D. | all of the above |
| Answer» B. holds and locates a workpiece during an inspection or for a manufacturing operation | |
| 2780. |
A mandrel is used to hold |
| A. | an eccentric work |
| B. | a heavy work |
| C. | a thin work |
| D. | none of these |
| Answer» E. | |
| 2781. |
The broaching operation in which either the work or the tool moves across the other, is known as |
| A. | pull broaching |
| B. | push broaching |
| C. | surface broaching |
| D. | continuous broaching |
| Answer» D. continuous broaching | |
| 2782. |
When the grinding wheel is marked by the letters from I to P, it indicates that the grinding wheel is of hard grade. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2783. |
In plunge grinding |
| A. | the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face |
| B. | the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face |
| C. | the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face |
| D. | the work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face |
| Answer» C. the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face | |
| 2784. |
Ultra-sonic machining is best suited for |
| A. | tool steels |
| B. | sintered carbides |
| C. | glass |
| D. | all of these |
| Answer» E. | |
| 2785. |
In which of the following machine, the work remains stationary and the tool is rotated? |
| A. | Vertical boring machine |
| B. | Horizontal boring machine |
| C. | Precision boring machine |
| D. | Jig boring machine |
| Answer» C. Precision boring machine | |
| 2786. |
An open structure of a grinding wheel is used for |
| A. | soft materials |
| B. | tough materials |
| C. | ductile materials |
| D. | all of these |
| Answer» E. | |
| 2787. |
The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is |
| A. | 1.02 |
| B. | 1.32 |
| C. | 1.66 |
| D. | 1.82 |
| Answer» C. 1.66 | |
| 2788. |
The part of the tool on which cutting edge is formed is called nose. |
| A. | Correct |
| B. | Incorrect |
| Answer» C. | |
| 2789. |
The chamfering is an essential operation after |
| A. | knurling |
| B. | rough turning |
| C. | boring |
| D. | thread cutting |
| Answer» E. | |
| 2790. |
A twist drill is specified by its |
| A. | shank, material and diameter |
| B. | shank, lip angle and size of flute |
| C. | material, length of body and helix angle |
| D. | any one of these |
| Answer» B. shank, lip angle and size of flute | |
| 2791. |
Glazing in grinding wheels takes place when the |
| A. | wheel is too hard or wheel revolves at a very high speed |
| B. | wheel is too soft or wheel revolves at a very slow speed |
| C. | wheel is too hard and wheel revolves at very slow speed |
| D. | wheel is too soft and wheel revolves at a very high speed |
| Answer» B. wheel is too soft or wheel revolves at a very slow speed | |
| 2792. |
Low helix angle drills are preferred for drilling holes in |
| A. | plastics |
| B. | copper |
| C. | cast steel |
| D. | carbon steel |
| Answer» B. copper | |
| 2793. |
The hole to be drilled for tapping is __________ the outside diameter of the thread on the tap. |
| A. | equal to |
| B. | smaller than |
| C. | greater than |
| Answer» C. greater than | |
| 2794. |
High speed steel cutting tools operate at cutting speeds __________ than carbon steel tools. |
| A. | 2 to 3 times lower |
| B. | 2 to 3 times higher |
| C. | 5 to 8 times higher |
| D. | 8 to 20 times higher |
| Answer» C. 5 to 8 times higher | |
| 2795. |
Jigs are used |
| A. | for holding and guiding the tool in drilling, reaming or tapping operations |
| B. | for holding the work in milling, grinding, planing or turning operations |
| C. | to check the accuracy of workpiece |
| D. | none of the above |
| Answer» B. for holding the work in milling, grinding, planing or turning operations | |
| 2796. |
The swing diameter over carriage is always less than the swing diameter over bed. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 2797. |
The velocity of tool along the tool face is known as |
| A. | shear velocity |
| B. | chip velocity |
| C. | cutting velocity |
| D. | mean velocity |
| Answer» C. cutting velocity | |
| 2798. |
The snag grinding is done |
| A. | to produce good surface finish and high degree of accuracy |
| B. | to remove considerable amount of metal without regard to accuracy of the finished surface |
| C. | to grind exterior cylindrical surfaces |
| D. | any one of the above |
| Answer» C. to grind exterior cylindrical surfaces | |
| 2799. |
The guideways are of |
| A. | flat type |
| B. | V-type |
| C. | dovetail type |
| D. | any one of these |
| Answer» E. | |
| 2800. |
The purpose of jigs and fixtures is to |
| A. | increase machining accuracy |
| B. | facilitate interchangeability |
| C. | decrease expenditure on quality control |
| D. | all of these |
| Answer» E. | |