MCQOPTIONS
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MCQOPTIONS
This section includes 8247 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 5901. |
Which of the following is a low melting point metal ? |
| A. | Stainless steel |
| B. | Wrought iron |
| C. | Tin |
| D. | Copper |
| Answer» D. Copper | |
| 5902. |
__________ can replace tungsten in high speed steel, |
| A. | Chromium |
| B. | Vanadium |
| C. | Cobalt |
| D. | Molybdenum |
| Answer» E. | |
| 5903. |
DDT is shipped in |
| A. | stainless steel containers |
| B. | paper bags |
| C. | fibre drums |
| D. | either (b) or (c) |
| Answer» E. | |
| 5904. |
Mild steel is |
| A. | a low carbon steel (0.05 to 0.3% carbon). |
| B. | highly resistant to corrosion (as much as stainless steel). |
| C. | a high carbon steel (0.5 to 1.5% carbon). |
| D. | very poor in strength & ductility. |
| Answer» B. highly resistant to corrosion (as much as stainless steel). | |
| 5905. |
Maximum consumption of lead is in the manufacture of |
| A. | storage batteries. |
| B. | solder alloys. |
| C. | electric cable sheathing. |
| D. | lead lined vessels. |
| Answer» B. solder alloys. | |
| 5906. |
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its |
| A. | high co-efficient of thermal expansion. |
| B. | low thermal conductivity. |
| C. | high corrosion resistance. |
| D. | all (a), (b) and (c). |
| Answer» D. all (a), (b) and (c). | |
| 5907. |
Gas holder of a gobar (cowdung) gas plant is made of |
| A. | molybdenum stainless steel |
| B. | tin |
| C. | mild steel |
| D. | aluminium |
| Answer» D. aluminium | |
| 5908. |
A measure of toughness of a material is its |
| A. | percentage elongation |
| B. | yield strength |
| C. | ultimate strength |
| D. | area under stress-strain diagram |
| Answer» C. ultimate strength | |
| 5909. |
Combination of metals and ceramics are called |
| A. | metalloy |
| B. | cermets |
| C. | pellets |
| D. | non-crystalline ceramics |
| Answer» C. pellets | |
| 5910. |
Lead is poured into the joint between two- __________ pipes. |
| A. | mild steel |
| B. | concrete |
| C. | cast iron |
| D. | asbestos cement |
| Answer» D. asbestos cement | |
| 5911. |
The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6 ) |
| A. | 4.4 |
| B. | 5.6 |
| C. | 8.4 |
| D. | 2.4 |
| Answer» B. 5.6 | |
| 5912. |
Age hardening is connected with |
| A. | babbit metal |
| B. | gun metal |
| C. | stainless steel |
| D. | duralumin |
| Answer» E. | |
| 5913. |
With decrease in the grain size of a material, its creep resistance |
| A. | increases. |
| B. | decreases. |
| C. | remains constant. |
| D. | either (a) or (b) ; depends on the material. |
| Answer» D. either (a) or (b) ; depends on the material. | |
| 5914. |
__________ rubber is generally used for making 'O' rings used for vacuum sealings. |
| A. | Natural |
| B. | Neoprene |
| C. | Butadiene |
| D. | Nitrile |
| Answer» C. Butadiene | |
| 5915. |
In electrical resistance welding, distortion results from the use of improper |
| A. | clamping methods |
| B. | electrodes |
| C. | current |
| D. | filler material |
| Answer» B. electrodes | |
| 5916. |
The conventional mechnical transducer, which converts pressure signal to displacement signal is |
| A. | spring |
| B. | manometer |
| C. | strain gauge |
| D. | none of these |
| Answer» C. strain gauge | |
| 5917. |
Austempering of steel requires.it to be heated to 875 C followed by sudden cooling to 250-525 C, thereby changing austenite to |
| A. | sorbite |
| B. | bainite |
| C. | martensite |
| D. | troostite |
| Answer» C. martensite | |
| 5918. |
A compact estimate about the amount of materials handling between various work stations is obtained from the |
| A. | gantt chart |
| B. | bin chart |
| C. | string diagram |
| D. | travel chart |
| Answer» E. | |
| 5919. |
Function of blow down valve in a boiler is to |
| A. | maintain the drum level. |
| B. | keep the drum pressure constant. |
| C. | drain out the sludge from the drum. |
| D. | empty the boiler during shutdown. |
| Answer» D. empty the boiler during shutdown. | |
| 5920. |
Insulation of liquid surface can be achieved by __________ on top of its surface. |
| A. | floating hollow polypropylene spheres |
| B. | spraying alumina powder |
| C. | putting cement |
| D. | none of these |
| Answer» B. spraying alumina powder | |
| 5921. |
For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be |
| A. | 100% indirect reduction. |
| B. | 100% direct reduction. |
| C. | 50-60% indirect reduction. |
| D. | 30-40% indirect reduction. |
| Answer» D. 30-40% indirect reduction. | |
| 5922. |
Identify the false statement |
| A. | Martensitic steels are less susceptible to pitting corrosion than austenitic steels. |
| B. | Pitting corrosion is usually very localised. |
| C. | Hydrogen embrittlement is facilitated by tensile stress. |
| D. | Stress corrosion cracking is facilitated by tensile stress. |
| Answer» B. Pitting corrosion is usually very localised. | |
| 5923. |
Gas turbine normally employs a constant __________ cycle. |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | none of these |
| Answer» B. temperature | |
| 5924. |
Electrostatic separation of minerals from each other is based on their differences in the following property. |
| A. | Densities. |
| B. | Magnetic permeabilities. |
| C. | Electrical conductivities. |
| D. | Hardness. |
| Answer» D. Hardness. | |
| 5925. |
Natural water contains approximately __________ percent of heavy water. |
| A. | 0.015 |
| B. | 0.71 |
| C. | 1.2 |
| D. | 3.5 |
| Answer» B. 0.71 | |
| 5926. |
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength. |
| A. | invar |
| B. | hastealloy |
| C. | duralumin |
| D. | monel metal |
| Answer» B. hastealloy | |
| 5927. |
Which of the following is a unit of time ? |
| A. | Barn |
| B. | Light year |
| C. | Angstrom |
| D. | none of these |
| Answer» E. | |
| 5928. |
__________ furnace is generally used in the non-ferrous foundaries. |
| A. | Direct arc |
| B. | Indirect arc |
| C. | Resistance |
| D. | Induction |
| Answer» C. Resistance | |
| 5929. |
Steel & cast iron pipes are produced by __________ casting. |
| A. | slush |
| B. | die |
| C. | investment |
| D. | true centrifugal |
| Answer» E. | |
| 5930. |
The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance. |
| A. | casting |
| B. | pattern |
| C. | draft |
| D. | distoration |
| Answer» D. distoration | |
| 5931. |
The total frictional resistance to fluid flow does not depend upon the |
| A. | roughness of the surface. |
| B. | fluid pressure. |
| C. | fluid density. |
| D. | fluid velocity. |
| Answer» C. fluid density. | |
| 5932. |
Stretcher strains found in a low carbon sheet are associated with the |
| A. | texture. |
| B. | dislocation density. |
| C. | yield point phenomenon. |
| D. | thickness of the sheet. |
| Answer» D. thickness of the sheet. | |
| 5933. |
'Age hardening' of duralumin is due to |
| A. | copper |
| B. | magnesium |
| C. | both (a) & (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 5934. |
Post weld heat treatment is done by |
| A. | normalising |
| B. | stress relieving |
| C. | tempering |
| D. | solution annealing |
| Answer» C. tempering | |
| 5935. |
How many atoms are there per unit cell in a body centred cubic lattice system ? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» B. 3 | |
| 5936. |
Presence of cobalt in steel improves its |
| A. | cutting ability |
| B. | corrosion resistance |
| C. | tensile strength |
| D. | none of these |
| Answer» B. corrosion resistance | |
| 5937. |
What is the reduction ratio in a fine crushing operation having following feed and product sizes? |
| A. | 0.5 |
| B. | 2 |
| C. | 5 |
| D. | 10 |
| Answer» C. 5 | |
| 5938. |
The capacity of a gyratory crusher is __________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range. |
| A. | same as |
| B. | 2.5 times |
| C. | 5 times |
| D. | 10 times |
| Answer» C. 5 times | |
| 5939. |
In classification, particles are said to be equal settling, if they have the same terminal velocities in the |
| A. | different fluids |
| B. | same fluid |
| C. | same field of force |
| D. | both (b) and (c) |
| Answer» E. | |
| 5940. |
Dispersion of a gas through liquid is done by using a |
| A. | sparger |
| B. | kneader |
| C. | masticator |
| D. | none of these |
| Answer» B. kneader | |
| 5941. |
Work index is defined as the |
| A. | gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen. |
| B. | energy needed to crush one tonne of feed to 200 microns. |
| C. | energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen. |
| D. | energy needed to crush one ton of feed to 100 microns. |
| Answer» B. energy needed to crush one tonne of feed to 200 microns. | |
| 5942. |
Removal of activated carbon from glycerine is done by |
| A. | plate and frame filter |
| B. | rotary vacuum filter |
| C. | batch basket centrifuge |
| D. | none of these |
| Answer» B. rotary vacuum filter | |
| 5943. |
During filtration operation, the filtrate encounters the resistance of the |
| A. | filter medium. |
| B. | cake. |
| C. | channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium. |
| D. | all (a), (b) and (c) |
| Answer» E. | |
| 5944. |
Filtration rate does not depend upon the |
| A. | pressure drop & area of filtering surface. |
| B. | resistance of the cake & the septum. |
| C. | properties of the cake & the filtrate. |
| D. | none of these. |
| Answer» E. | |
| 5945. |
Which of the following is a fine crusher? |
| A. | Blake jaw crusher |
| B. | Gyratory crusher |
| C. | Toothed roll crusher |
| D. | Dodge jaw crusher |
| Answer» D. Dodge jaw crusher | |
| 5946. |
__________ is a cohesive solid. |
| A. | Wheat |
| B. | Sand |
| C. | Wet clay |
| D. | none of these |
| Answer» D. none of these | |
| 5947. |
The optimum moisture content in solids to be crushed/ground ranges from __________ percent. |
| A. | 3 to 4 |
| B. | 8 to 10 |
| C. | 10 to 15 |
| D. | 15 to 20 |
| Answer» B. 8 to 10 | |
| 5948. |
A belt conveyor used for the transportation of materials can |
| A. | run upto 1 km. |
| B. | travel at a speed upto 300 metres/minute. |
| C. | handle materials upto 5000 tons/hr. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 5949. |
Which of the following is not used as a surface active agent in a flocculation operation? |
| A. | Sodium silicate |
| B. | Quartz |
| C. | Lime |
| D. | Alumina |
| Answer» C. Lime | |
| 5950. |
__________ mill is not a revolving mill. |
| A. | Pebble |
| B. | Compartment |
| C. | Cage |
| D. | Tube |
| Answer» D. Tube | |