McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 701. |
Which one of the following is an angle measuring device? |
| A. | Hermaphrodite caliper |
| B. | Divider |
| C. | Sine bar |
| D. | Angle iron |
| E. | Trammel |
| Answer» C. Sine bar | |
| 702. |
With electronic circuits the accuracy that can be expected from scanners will lie in the range of |
| A. | 25 to 50% |
| B. | 5 to 10% |
| C. | 20 to 25% |
| D. | 10 to 17.5% |
| E. | 0.1 to 1% |
| Answer» E. 0.1 to 1% | |
| 703. |
Stellite is a non-ferrous cast alloy containing |
| A. | Nickel, cobalt and chromium |
| B. | Tungsten, chromium and cobalt |
| C. | Molybdenum and vanadium |
| D. | Cobalt and manganese |
| E. | Nickel, lead and zinc |
| Answer» B. Tungsten, chromium and cobalt | |
| 704. |
A strain gauge is a |
| A. | sensor |
| B. | recording device |
| C. | Parting off |
| D. | measuring device |
| E. | comparator |
| Answer» A. sensor | |
| 705. |
Bearing lining |
| A. | Muntz metal |
| B. | Duralumin |
| C. | Babbit |
| D. | Bronze |
| E. | Delta metal |
| Answer» C. Babbit | |
| 706. |
The counteract the increased sulphur percentage |
| A. | Carbon is added |
| B. | Manganese is added |
| C. | Phosphorous is added |
| D. | Oxidising agents are added |
| E. | None of the above |
| Answer» B. Manganese is added | |
| 707. |
Standard taper generally used on milling machine spindles is |
| A. | Seller's taper |
| B. | Morse taper |
| C. | Brown and Sharpe taper |
| D. | Chapman taper |
| E. | Jarno and Reed taper |
| Answer» C. Brown and Sharpe taper | |
| 708. |
C-14 steel indicates plain carbon steel containing carbon percentage |
| A. | 14 |
| B. | 1.4 |
| C. | 0.14 |
| D. | 0.1 to 0.8 |
| E. | 1 to 1.8 |
| Answer» D. 0.1 to 0.8 | |
| 709. |
The bonding of a rubber sheet with a metal is done by |
| A. | Induction welding |
| B. | Melting rubber in metal |
| C. | Welding |
| D. | High frequency dielectric heating |
| E. | Adhesive bonding |
| Answer» E. Adhesive bonding | |
| 710. |
Permeability of a foundry sand is |
| A. | Capacity to hold moisture |
| B. | The ability of sand to withstand high temperatures |
| C. | Distribution of binder in sand |
| D. | Porosity to permit the escape of gases |
| E. | Fineness of sand |
| Answer» D. Porosity to permit the escape of gases | |
| 711. |
Zinc chloride finds application in |
| A. | Soft soldering |
| B. | Post weld cleaning |
| C. | Thermit welding |
| D. | TIG welding |
| E. | Brazing |
| Answer» A. Soft soldering | |
| 712. |
The surface finish obtainable in ultrasonic machining is of the order of |
| A. | 500 to 1000 |
| B. | 0.2 to 0.5 |
| C. | 200 to 500 |
| D. | 20 to 50 |
| E. | 2 to 5 |
| Answer» B. 0.2 to 0.5 | |
| 713. |
In a steel plant the product of a blast furnace is |
| A. | Cast steel |
| B. | Pig iron |
| C. | Ingot |
| D. | Mild steel |
| E. | Cast iron |
| Answer» B. Pig iron | |
| 714. |
Which of the following process has the highest metal removal rate (mm33/min) |
| A. | Chemical machining |
| B. | Electron beam machining |
| C. | Laser beam machining |
| D. | Ultrasonic machining |
| E. | Abrasive machining |
| Answer» D. Ultrasonic machining | |
| 715. |
The type of grains usually preferred for moulding sand are |
| A. | Cylindrical |
| B. | Hemishperical |
| C. | Cubical |
| D. | Round |
| E. | Sharp irregular shaped |
| Answer» E. Sharp irregular shaped | |
| 716. |
A drill will not cut when |
| A. | helix pitch is small |
| B. | lip angle is zero |
| C. | point angle is 118? |
| D. | helix pitch is large |
| E. | Parting off |
| Answer» B. lip angle is zero | |
| 717. |
In shell moulding, the dimensional accuracy that can be expected is |
| A. | 0.001 to 0.002 mm/mm |
| B. | 1 mm/mm |
| C. | 0.003 to 0.005 mm/mm |
| D. | 0.1 mm to 0.3 mm |
| E. | 0.3 mm to 0.5 mm |
| Answer» C. 0.003 to 0.005 mm/mm | |
| 718. |
The collapsible tubes for tooth pastes are made by |
| A. | rolling |
| B. | die casting |
| C. | extruding |
| D. | drawing |
| E. | Parting off |
| Answer» C. extruding | |
| 719. |
A standard ground drill for use on mild steel has a point angle of |
| A. | 80? |
| B. | 118? |
| C. | 30? |
| D. | 138? |
| E. | 60? |
| Answer» B. 118? | |
| 720. |
Ultrasonic machine is best suited for |
| A. | Non-ferrous metal |
| B. | Spongy materials |
| C. | Brittle materials |
| D. | Dielectrics |
| E. | Amorphous solids |
| Answer» C. Brittle materials | |
| 721. |
Which of the following is very hard grade? |
| A. | Parting off |
| B. | A - E |
| C. | G - K |
| D. | T - Z |
| E. | L - O |
| Answer» D. T - Z | |
| 722. |
In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool |
| A. | Carbon steel |
| B. | Wood |
| C. | High speed steel |
| D. | Carbide |
| E. | Diamond |
| Answer» D. Carbide | |
| 723. |
The process of cutting thin gears from metal sheets is known as |
| A. | Extruding |
| B. | Punching |
| C. | Stamping |
| D. | Sintering |
| E. | Rolling |
| Answer» C. Stamping | |
| 724. |
A Hack-saw blade cuts on |
| A. | Depends on direction of force |
| B. | Both |
| C. | Forward stroke |
| D. | Return stroke |
| E. | Depends on orientation |
| Answer» C. Forward stroke | |
| 725. |
Buffing is |
| A. | An finishing operation in broaching |
| B. | An etching process |
| C. | The process of bringing out the luster of metal |
| D. | A process of electroplating |
| E. | Covering a metal part with soft materials to prevent damage |
| Answer» C. The process of bringing out the luster of metal | |
| 726. |
Which of the following method cannot be used for manufacturifng internal gears? |
| A. | Die casting |
| B. | Broaching |
| C. | Casting |
| D. | Hobbing |
| E. | Stamping |
| Answer» D. Hobbing | |
| 727. |
Which of the following is an accessory for lathe? |
| A. | Head stock |
| B. | Lead screw |
| C. | Steady rest |
| D. | Tool post |
| E. | Tail stock |
| Answer» C. Steady rest | |
| 728. |
The size of a lathe is expressed by |
| A. | Height of centres from ground |
| B. | Swing of lathe |
| C. | Maximum speed of chuck |
| D. | Gross weight of lathe |
| E. | Diameter of chuck |
| Answer» B. Swing of lathe | |
| 729. |
During oxyacetylene flame cutting, the metal is cut due to |
| A. | Reduction process |
| B. | Molecular transfer |
| C. | Intensive oxidation |
| D. | Evaporation of metal |
| E. | Burning of metal |
| Answer» C. Intensive oxidation | |
| 730. |
If a drill does not cut; the probable cause would be |
| A. | Drill blunt |
| B. | Material difficult to drill |
| C. | Speed low |
| D. | Absence of coolant |
| E. | None of the above |
| Answer» A. Drill blunt | |
| 731. |
Which of the following defect in castings may develop due to inadequate venting? |
| A. | Misruns |
| B. | Blow holes |
| C. | Cold shuts |
| D. | Parting off |
| E. | Inclusions |
| Answer» B. Blow holes | |
| 732. |
The relief angle for high speed steel tools is usually |
| A. | 30? to 60? |
| B. | 1? to 3? |
| C. | 16? to 30? |
| D. | 3? to 10? |
| E. | 11? to 15? |
| Answer» D. 3? to 10? | |
| 733. |
The fact that how closely the instrument reading follows the measured variables is termed as |
| A. | Threshold sensitivity |
| B. | Fidelity |
| C. | Precision |
| D. | Accuracy |
| E. | Hysteresis |
| Answer» B. Fidelity | |
| 734. |
The averge cutting speed for machining mild steel by high speed steel tool is |
| A. | 30 m/min |
| B. | 50 m/min |
| C. | 20 m/min |
| D. | 10 m/min |
| E. | 40 m/min |
| Answer» A. 30 m/min | |
| 735. |
In metal cutting operations continuous chips are produced while machining |
| A. | Brittle materials |
| B. | Ductile materials |
| C. | Hard materials |
| D. | Soft materials |
| E. | None of the above |
| Answer» B. Ductile materials | |
| 736. |
Drilling speed in aluminium nearly |
| A. | 35 to 50 m/min |
| B. | 10 to 25 m/min |
| C. | 60 to 75 m/min |
| D. | 3 to 5 m/min |
| E. | 80 to 100 m/min |
| Answer» A. 35 to 50 m/min | |
| 737. |
Which of the following has better machinability as compared to the remaining? |
| A. | Low carbon steels |
| B. | Zinc alloys |
| C. | Parting off |
| D. | Gun metal |
| E. | Wrought iron |
| Answer» B. Zinc alloys | |
| 738. |
Crossing in foundry practice is |
| A. | A means for checking the strength of cores |
| B. | A defect in casting that can be removed by heating in a furnace and cooling at show rate. |
| C. | The process of addition of chemicals to the molten metal to improve its fluidity |
| D. | The process of formation of oxides on the surface of the molten metal |
| E. | The process of forcing metal uniformly into the mould |
| Answer» D. The process of formation of oxides on the surface of the molten metal | |
| 739. |
Quill is |
| A. | Curring a blind key way on an object |
| B. | A steel tube in the head of some machine tools that encloses the bearings and rotating spindle on which are mounted the cutting tools |
| C. | A tool used in milling machine to cut T-slots |
| D. | A holding device used on planers |
| E. | None of above |
| Answer» B. A steel tube in the head of some machine tools that encloses the bearings and rotating spindle on which are mounted the cutting tools | |
| 740. |
Which of the following gears are not used to transmit motion from one shaft to another shaft at an angle to the first? |
| A. | Worm gears |
| B. | Bevel gears |
| C. | Spur gears |
| D. | Herringbone gears |
| E. | Helical gears |
| Answer» C. Spur gears | |
| 741. |
For defining length the standard generally followed is |
| A. | Bar standard |
| B. | End standard |
| C. | Light wave standard |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 742. |
A flatter is made of |
| A. | Parting off |
| C. | High speed steel |
| D. | Mild steel |
| E. | High carbon steel |
| Answer» E. High carbon steel | |
| 743. |
Slag inclusion in castings is a |
| A. | Internal defect |
| B. | Defect that can be removed by felting |
| C. | Surface defect |
| D. | Superficial defect |
| E. | Moulding defect |
| Answer» C. Surface defect | |
| 744. |
Which one of the following methods cannot be used for producing external threads? |
| A. | By tap |
| B. | By dies |
| C. | Vernier caliper |
| D. | By rolling |
| E. | One lathe |
| Answer» A. By tap | |
| 745. |
The diameter of a round bar with close tolerances is quickly measured by |
| A. | Slip gauges |
| B. | External micrometer |
| C. | Vernier caliper |
| D. | Snap gauge |
| E. | Any of the above |
| Answer» D. Snap gauge | |
| 746. |
Choose the incorrect statement. Good machinability results in |
| A. | Low components cost |
| B. | Moderate cuttng forces |
| C. | Smaller chips |
| D. | All of the above |
| E. | A process of removing carbon from metals |
| Answer» A. Low components cost | |
| 747. |
The main advantage of using synthetic sand in foundry is |
| A. | It does not require moisture |
| B. | It is less costly |
| C. | Its properties can be easily controlled |
| D. | It is highly refractory |
| E. | It can take any shape |
| Answer» C. Its properties can be easily controlled | |
| 748. |
In ball bearing steels, chromium percentage is normally in the range |
| A. | 3 - 5 percent |
| B. | 14 - 16 percent |
| C. | 5 - 10 percent |
| D. | 1 - 2 percent |
| E. | 2 - 3 percent |
| Answer» B. 14 - 16 percent | |
| 749. |
A balometer is an element which senses |
| A. | Optical input and delivers thermal output |
| B. | Thermal input |
| C. | Electrical input and delivers thermal output |
| D. | Optical input and delivers electrical output |
| E. | None of the above |
| Answer» A. Optical input and delivers thermal output | |
| 750. |
The power is transmitted by lead screw to the carriage through |
| A. | Rack and pinion a arrangement |
| B. | Gear system |
| C. | Chain drive |
| D. | Pulley drive |
| E. | Half nut |
| Answer» E. Half nut | |
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