MCQOPTIONS
Saved Bookmarks
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.
| 6901. |
Which of the following does not figure in the list of seven substances selected for international temperature scale ? |
| A. | Ice (F.P) and steam (B.P) |
| B. | Oxygen and sulphur (B.P) |
| C. | Antimony and silver (F.P) |
| D. | Zinc (B.P) and mercury (F.P) |
| Answer» E. | |
| 6902. |
A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0 C) temperature. |
| A. | helium |
| B. | hydrogen |
| C. | nitrogen |
| D. | none of these |
| Answer» B. hydrogen | |
| 6903. |
pH meter has |
| A. | one cell |
| B. | two cells |
| C. | three cells |
| D. | no cell |
| Answer» C. three cells | |
| 6904. |
Routh test |
| A. | criterion provides information about the actual location of roots. |
| B. | cannot be used to test the stability of a control system containing transportation lag. |
| C. | criterion is not applicable to systems with polynomial characteristic equation. |
| D. | can not determine as to how many roots of the characteristics equation have positive real roots. |
| Answer» C. criterion is not applicable to systems with polynomial characteristic equation. | |
| 6905. |
A non-linear chemical system is exemplified by a/an |
| A. | isothermal CSTR |
| B. | mixer |
| C. | non-isothermal CSTR |
| D. | none of these |
| Answer» D. none of these | |
| 6906. |
The frequency response of a first order system, has a phase shift with lower and upper bounds given by |
| A. | - , /2 |
| B. | - /2, /2 |
| C. | - /2, 0 |
| D. | 0, /2 |
| Answer» E. | |
| 6907. |
Gas chromatography is used for the measurement of |
| A. | temperature |
| B. | pressure |
| C. | concentration |
| D. | flow rate |
| Answer» D. flow rate | |
| 6908. |
Which of the following thermocouples can measure the maximum temperature ? |
| A. | Platinum-rhodium |
| B. | Tungsten-molybdenum |
| C. | Chromel-alumel |
| D. | Iron-constantan |
| Answer» C. Chromel-alumel | |
| 6909. |
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ? |
| A. | Peltier effect |
| B. | Thomson effect |
| C. | Seebeck effect |
| D. | none of these |
| Answer» C. Seebeck effect | |
| 6910. |
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale. |
| A. | Kelvin |
| B. | Centigrade |
| C. | Fahrenheit |
| D. | Reaumer |
| Answer» D. Reaumer | |
| 6911. |
The __________ of a vapor pressure thermometer is a functioning element. |
| A. | pointer |
| B. | bourdon tube |
| C. | bulb |
| D. | none of these |
| Answer» B. bourdon tube | |
| 6912. |
A negative gain margin expressed in decibels means a/an __________ system. |
| A. | stable |
| B. | unstable |
| C. | critically damped |
| D. | none of these |
| Answer» C. critically damped | |
| 6913. |
Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an |
| A. | insulator |
| B. | conductor |
| C. | solid semi-conductor |
| D. | liquid semi-conductor |
| Answer» D. liquid semi-conductor | |
| 6914. |
Flapper nozzle is used in a/an __________ controller. |
| A. | electronic |
| B. | hydraulic |
| C. | pneumatic |
| D. | none of these |
| Answer» D. none of these | |
| 6915. |
Which of the following measurements can be made by the measurement of emf ? |
| A. | pH value |
| B. | Degree of hydrolysis |
| C. | Composition of complex ions |
| D. | All (a), (b) & (c) |
| Answer» E. | |
| 6916. |
A magnetic flowmeter is |
| A. | based on the principle of Faraday's law. |
| B. | capable of measuring the flow rate of slurries and electrolytes. |
| C. | based on the linear relationship between the fluid flow rate and the induced voltage. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 6917. |
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace. |
| A. | oxygen in |
| B. | carbon dioxide in |
| C. | carbon monoxide in |
| D. | temperature of |
| Answer» B. carbon dioxide in | |
| 6918. |
Strain gage pressure transducers are used to measure __________ pressures. |
| A. | gage as well as vacuum |
| B. | absolute as well as differential |
| C. | both (a) and (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 6919. |
Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit? |
| A. | Seebeck effect |
| B. | Peltier effect |
| C. | Joule heating effect |
| D. | Thomson effect |
| Answer» C. Joule heating effect | |
| 6920. |
The second order system with the transfer function has a damping ratio of |
| A. | 2.0 |
| B. | 0.5 |
| C. | 1.0 |
| D. | 4.0 |
| Answer» C. 1.0 | |
| 6921. |
In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable. |
| A. | load |
| B. | controlled |
| C. | manipulated |
| D. | none of these |
| Answer» D. none of these | |
| 6922. |
Old cycle handles are coated with nickel using |
| A. | cementation. |
| B. | spray coating. |
| C. | galvanising process. |
| D. | tinning process. |
| Answer» C. galvanising process. | |
| 6923. |
CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the |
| A. | specific fuel consumption is very low due to the use of heavy water. |
| B. | fuel cost is much lower than that used in pressurised water or boiling water reactor. |
| C. | heavy water is used both as coolant as well as moderator. |
| D. | both 'b' & 'c' |
| Answer» E. | |
| 6924. |
__________ is not used as a material of construction in thermocouples. |
| A. | Alumel |
| B. | Rhodium |
| C. | Constantan |
| D. | Duralumin |
| Answer» E. | |
| 6925. |
Coarse grained steels have |
| A. | low toughness |
| B. | no tendency to distort |
| C. | high density |
| D. | very high toughness |
| Answer» C. high density | |
| 6926. |
Steel balls are manufactured by cold heading. After cold forming, they are subjected to |
| A. | tempering |
| B. | normalising |
| C. | stress-relieving |
| D. | artificial ageing |
| Answer» D. artificial ageing | |
| 6927. |
Free oxygen is removed from boiler feed water, because it |
| A. | reduces heat transfer co-efficient. |
| B. | is corrosive. |
| C. | causes explosion. |
| D. | none of these. |
| Answer» C. causes explosion. | |
| 6928. |
Out of the following, the materials having maximum magnetic permeability is |
| A. | silicon steel (Si = 4%) |
| B. | cast iron |
| C. | wrought iron |
| D. | mild steel |
| Answer» B. cast iron | |
| 6929. |
Ageing of steel refers to the |
| A. | degradation of steel by corrosion. |
| B. | failure of steel structure by overstress-ing. |
| C. | return of sharp yield point in temper rolled low carbon sheet after a period of time. |
| D. | decarburisation of steel by overheating. |
| Answer» D. decarburisation of steel by overheating. | |
| 6930. |
When metals are heated to high temperature, their __________ increases in general. |
| A. | atomic vibration |
| B. | creep strength |
| C. | yield stress & ultimate tensile strength |
| D. | toughness & stiffness |
| Answer» B. creep strength | |
| 6931. |
A friction lighter is normally used for lighting gas welding torch, because of the reason that |
| A. | its initial cost is very low. |
| B. | duration of spark created is very small. |
| C. | safety of welder is ensured. |
| D. | it is easier to operate & maintain. |
| Answer» D. it is easier to operate & maintain. | |
| 6932. |
Which of the following is an undesirable dynamic characteristic of an instrument ? |
| A. | Reproducibility |
| B. | Dead zone |
| C. | Time lag |
| D. | Static error |
| Answer» D. Static error | |
| 6933. |
Which of the following is not the triple point of water ? |
| A. | 32 R |
| B. | 273 K |
| C. | 492 R |
| D. | 32 F |
| Answer» B. 273 K | |
| 6934. |
Pick out the one which is a first order instrument. |
| A. | Mercury in glass thermometer (without any covering or air gap). |
| B. | Bare metallic thermometer. |
| C. | Bare vapor pressure thermometer. |
| D. | All (a), (b) and (c). |
| Answer» E. | |
| 6935. |
Load cells are used for the measurement of |
| A. | stress |
| B. | weight |
| C. | strain |
| D. | velocity |
| Answer» C. strain | |
| 6936. |
Which of the following is the dynamic characteristics of an instrument ? |
| A. | Reproducibility |
| B. | Sensitivity |
| C. | Dead zone |
| D. | Fidelity |
| Answer» E. | |
| 6937. |
Duralumin is an alloy of aluminium and copper. Percentage of copper in duralumin is |
| A. | 38 |
| B. | 26 |
| C. | 16 |
| D. | 4 |
| Answer» E. | |
| 6938. |
Copper is not present as an alloying constituent in |
| A. | silicon bronze |
| B. | constantan |
| C. | nichrome |
| D. | delta metal |
| Answer» D. delta metal | |
| 6939. |
Lead is added to 60:40 brass primarily to improve |
| A. | machinability |
| B. | corrosion resistance |
| C. | fluidity |
| D. | strength |
| Answer» B. corrosion resistance | |
| 6940. |
Air intake for an air compressor should be preferably taken from |
| A. | a site, where cooling towers are located nearby. |
| B. | a site, where open coal yard in located nearby. |
| C. | an air conditioned room maintained at a temperature of 18 C. |
| D. | an outside atmosphere at 10 C. |
| Answer» E. | |
| 6941. |
Current asset of a factory includes the |
| A. | goodwill of the company. |
| B. | common stocks held by the company. |
| C. | manufacturing plant & equipment. |
| D. | inventory. |
| Answer» D. inventory. | |
| 6942. |
The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam. |
| A. | wetness |
| B. | mass flow rate |
| C. | both 'a' & 'b' |
| D. | neither 'a' nor 'b' |
| Answer» D. neither 'a' nor 'b' | |
| 6943. |
Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh. |
| A. | 746 |
| B. | 3000 |
| C. | 1000 |
| D. | 550 |
| Answer» C. 1000 | |
| 6944. |
Gross & Net calorific values will be the same for |
| A. | methane |
| B. | propane |
| C. | carbon monoxide |
| D. | hydrogen |
| Answer» D. hydrogen | |
| 6945. |
As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint. |
| A. | butt |
| B. | lap |
| C. | welded |
| D. | none of these |
| Answer» C. welded | |
| 6946. |
Presence of small quantity of sulphur in low carbon steel improves its |
| A. | formability |
| B. | machinability |
| C. | weldability |
| D. | hardenarality |
| Answer» C. weldability | |
| 6947. |
If a solid is compressed adiabatically in its elastic range, its __________ remains constat |
| A. | internal energy |
| B. | enthalpy |
| C. | entropy |
| D. | temperature |
| Answer» D. temperature | |
| 6948. |
'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and |
| A. | petrol. |
| B. | LPG. |
| C. | light hydrocarbon gases (e.g. butane or propane). |
| D. | none of these. |
| Answer» B. LPG. | |
| 6949. |
On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is |
| A. | creep |
| B. | toughness |
| C. | tensile strength |
| D. | fatigue |
| Answer» C. tensile strength | |
| 6950. |
It is possible to form martensite |
| A. | sometimes by cold working. |
| B. | sometimes without nucleation. |
| C. | sometimes by gas quenching. |
| D. | only in iron based alloys. |
| Answer» E. | |