MCQOPTIONS
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MCQOPTIONS
This section includes 2167 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
Which of the following is correct for water activity? |
| A. | Ratio of relative equilibrium moisture and 10 |
| B. | Ratio of relative equilibrium moisture and 100 |
| C. | Ratio of relative equilibrium moisture and 1000 |
| D. | Relative equilibrium moisture |
| Answer» C. Ratio of relative equilibrium moisture and 1000 | |
| 852. |
FICT stands for ______________ |
| A. | Forced iso concentration technique |
| B. | Flouro iso concentration technique |
| C. | Flouro ion concentration technique |
| D. | Flouro ion carry transfer |
| Answer» C. Flouro ion concentration technique | |
| 853. |
For moisture measurement, microwave of ____________ wavelength is used. |
| A. | Less than 3um |
| B. | Less than 3nm |
| C. | Less than 3mm |
| D. | less than 3cm |
| Answer» E. | |
| 854. |
PICT has high sensitivity than FICT. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 855. |
Ion-isoconcentration technique is used for determination of __________________ |
| A. | Humidity |
| B. | Water in organic solvent |
| C. | pH of solution |
| D. | None of the mentioned |
| Answer» C. pH of solution | |
| 856. |
The method in which the user’s receiver and the reference station are assumed not to be synchronized in time is called as _______ |
| A. | Redundancy method |
| B. | Pseudoranging |
| C. | Integrity method |
| D. | Differential method |
| Answer» C. Integrity method | |
| 857. |
______ is the error in determining position relative to an earth referenced coordinate system? |
| A. | Absolute error |
| B. | Repeatable error |
| C. | Relative error |
| D. | Differential error |
| Answer» B. Repeatable error | |
| 858. |
The effect of signal simultaneously taking different paths to reach the receiver is called as _______ |
| A. | Multipath effects |
| B. | Differential path effects |
| C. | Propagation noise |
| D. | Atmospheric distortion |
| Answer» B. Differential path effects | |
| 859. |
The propagation velocity is not constant in ground waves. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 860. |
The factor by which a receiver fails to reach the theoretical internal noise limit is known as ________ |
| A. | Noise factor |
| B. | Noise |
| C. | Coefficient of noise |
| D. | Noise figure |
| Answer» E. | |
| 861. |
Received radio energy is a function of the area of the receiving antenna. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 862. |
The brittle material directly fractures without yielding when it reaches the ultimate strength material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 863. |
The relationship between the shear stress-strain is similar to the flow curve for plasticity of material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 864. |
In the computation of engineering stress, the actual or instantaneous cross-sectional area is used. |
| A. | True |
| B. | False |
| Answer» C. | |
| 865. |
The induced stress in the material and the young’s modulus, both are the properties of the material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 866. |
Tensile strength of a material is the ability of a material to resist the lateral load without failure. |
| A. | True |
| B. | False |
| Answer» C. | |
| 867. |
What is the final amount of water flowing through a valve in one hour when originally the rate of flow from the valve was 10m3/hr which was reduced by 80%? |
| A. | 3m3/hr |
| B. | 4m3/hr |
| C. | 5m3/hr |
| D. | 2m3/hr |
| Answer» E. | |
| 868. |
What is the rate of flow of water from a cylindrical valve if the cylindrical valve has a diameter of 10 cm and velocity of water is 10m/s? |
| A. | 3.92 * 10-3 m3/s |
| B. | 3.92 * 10-2 m3/s |
| C. | 7.85 * 10-2 m3/s |
| D. | 7.85 * 10-3 m3/s |
| Answer» D. 7.85 * 10-3 m3/s | |
| 869. |
Pneumatic actuator based valves use air to generate rotational force. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 870. |
How many exit ports does a 2 way valve have? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 871. |
What is the percentage change in amount of water flowing through a valve in one hour when originally the rate of flow from the valve was 10m3/hr which was reduced to 8m3/hr? |
| A. | 50% |
| B. | 60% |
| C. | 20% |
| D. | 800% |
| Answer» D. 800% | |
| 872. |
How many ports does a 3 way valve have? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 873. |
Which type of valves contains a flat disc obstructer? |
| A. | Butterfly valves |
| B. | Two way ball valves |
| C. | Three way ball valves |
| D. | Plug Valves |
| Answer» B. Two way ball valves | |
| 874. |
What is the velocity of water from a cylindrical valve if the cylindrical valve has a diameter of 10 cm and rate of flow of water in Litres per second is 157L/s? |
| A. | 40m/s |
| B. | 30m/s |
| C. | 20m/s |
| D. | 30m/s |
| Answer» D. 30m/s | |
| 875. |
Which type of valves contains tapered cylindrical obstructer? |
| A. | Butterfly valves |
| B. | Two way ball valves |
| C. | Three way ball valves |
| D. | Plug Valves |
| Answer» E. | |
| 876. |
In “Butterfly valves” the flow can be switched and controlled by rotating the obstructer in 90 degrees. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 877. |
In “two way ball valves” the flow can be switched and controlled by rotating the ball in 90 degrees. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 878. |
What is the percentage change in amount of water flowing through a valve in one hour when originally the rate of flow from the valve was 10 m3/hr which was reduced to 5m3/hr? |
| A. | 50% |
| B. | 60% |
| C. | 20% |
| D. | 100% |
| Answer» B. 60% | |
| 879. |
What is the rate of flow of water in Litres per second from a cylindrical valve if the cylindrical valve has a diameter of 10 cm and velocity of water is 12m/s? |
| A. | 100L/s |
| B. | 127L/s |
| C. | 157L/s |
| D. | 94.2L/s |
| Answer» E. | |
| 880. |
What is the rate of flow of water from a cylindrical valve if the cylindrical valve has a diameter of 10 cm and velocity of water is 5m/s? |
| A. | 3.92 * 10-3m3/s |
| B. | 3.92 * 10-2m3/s |
| C. | 4.92 * 10-2m3/s |
| D. | 4.92 * 10-3m3/s |
| Answer» C. 4.92 * 10-2m3/s | |
| 881. |
What is the percentage change in amount of water flowing through a valve in one hour when originally the rate of flow from the valve was 15m3/hr which was reduced to 5m3/hr? |
| A. | 50% |
| B. | 60% |
| C. | 20% |
| D. | 66.67% |
| Answer» E. | |
| 882. |
Which of the following is/are correct regarding the potentiostat method? |
| A. | It is a polarization technique that allows for controlled polarization |
| B. | It works on controlling voltage between a working and reference electrode |
| C. | It is a corrosion analysis method |
| D. | It is a corrosion analysis technique method that allows for controlled polarization and it works on controlling voltage between a working and reference electrode. |
| Answer» E. | |
| 883. |
Which of the following metals that are spontaneously passivated on coupling with platinum? |
| A. | Titanium |
| B. | Chromium |
| C. | Titanium and Chromium |
| D. | Neither titanium nor chromium |
| Answer» D. Neither titanium nor chromium | |
| 884. |
In a galvanic couple, the corrosion rate of the metal with active corrosion potential is accelerated whereas the corrosion rate of noble metal retards preferentially. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 885. |
The reversible potential of gold is more positive than platinum in emf series whereas in galvanic series the position of gold is below platinum. |
| A. | False |
| B. | True |
| Answer» C. | |
| 886. |
Severe corrosion of metals occurred when coupled with platinum is due to the higher current density for hydrogen evolution but not due to the reversible potential of the platinum-platinum ion electrode. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 887. |
Which of the following type of polarization has a negligible effect on velocity? |
| A. | Concentration polarization |
| B. | Activation polarization |
| C. | Concentration polarization and Activation polarization |
| D. | Neither concentration nor Activation polarization |
| Answer» C. Concentration polarization and Activation polarization | |
| 888. |
The corrosion rate is usually dependent at low velocity whereas at high velocities it becomes independent. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 889. |
Which of the following is described in the given figure? |
| A. | Effect of velocity on anodic dissolution of oxygen |
| B. | Effect of velocity on the electrochemical behavior of active-passive transition metal |
| C. | Effect of velocity on the electrochemical behavior of a normal metal |
| D. | Effect of velocity on the cathodic dissolution of metal |
| Answer» D. Effect of velocity on the cathodic dissolution of metal | |
| 890. |
What is the potential of oxidizers at which metal passivation starts according to a given figure? |
| A. | Concentration corresponding to C |
| B. | Concentration corresponding to D |
| C. | Concentration corresponding to A |
| D. | Concentration corresponding to B |
| Answer» B. Concentration corresponding to D | |
| 891. |
Which of the following is/are correct when oxidizing agents are added to a corrosion system containing a non-passivating metal? |
| A. | Rate of corrosion decreases after certain potential |
| B. | Rate of corrosion increases with increase in oxidizers concentration |
| C. | Rate of corrosion increases after certain potential |
| D. | Results in the formation stable oxide layer |
| Answer» C. Rate of corrosion increases after certain potential | |
| 892. |
Which of the following is/are the applications of mixed-potential theory? |
| A. | Permit prediction of complex corrosion behavior |
| B. | To develop new corrosion prevention methods |
| C. | To develop new rapid corrosion rate measurement |
| D. | Permit prediction of complex corrosion behavior, to develop new corrosion prevention methods and to develop new rapid corrosion rate measurement |
| Answer» E. | |
| 893. |
During post treatment of MpSi, a layer of silicon dioxide is formed. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 894. |
Post-treatment starts with a thermal treatment of the MpSi structure at _____ |
| A. | 900°C |
| B. | 1100 °C |
| C. | 1570°C |
| D. | 1650°C |
| Answer» C. 1570°C | |
| 895. |
If the etching conditions are not controlled, then _____ decreases with pore depth. |
| A. | the period length |
| B. | diameter of the pores |
| C. | orderliness of the pores |
| D. | reflectivity of the material |
| Answer» B. diameter of the pores | |
| 896. |
Which of the following is true according to the Lehmann’s model for the formation of MpSi? |
| A. | The current density is equal to the critical current density |
| B. | The current density is half of the critical current density |
| C. | The critical current density is equal to square of the current density |
| D. | Lehmann’s model does not give relation between current density and critical current density |
| Answer» B. The current density is half of the critical current density | |
| 897. |
Cone-like pores can be obtained by using Lehmann’s law. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 898. |
What is the meaning of JavaScript Hoisting? |
| A. | Moving declarations to bottom |
| B. | Moving declarations to top |
| C. | Hosting variables by itself |
| D. | Moving declarations to specified location |
| Answer» C. Hosting variables by itself | |
| 899. |
What is the method used to stop an execution of a method? |
| A. | clearInterval() |
| B. | clearTimeout() |
| C. | both clearInterval() and clearTimeout() |
| D. | clearmethod() |
| Answer» D. clearmethod() | |
| 900. |
What is the purpose of the window.location object in JavaScript? |
| A. | Get the URL and redirect |
| B. | Get the location of the cursor |
| C. | Get the path to the next page |
| D. | Get the location & path of the next page |
| Answer» B. Get the location of the cursor | |