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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Refer to Q4 and estimate the maximum refrigeration load imposed by this freezing installation assuming the fans but not their motors are in the tunnel. |
| A. | 50.5 tons of refrigeration |
| B. | 40.5 tons of refrigeration |
| C. | 44.5 tons of refrigeration |
| D. | 55.5 tons of refrigeration |
| Answer» D. 55.5 tons of refrigeration | |
| 2. |
It is desired to freeze 10,000 loaves of bread each weighing 0.75 kg from an initial room temperature of 18°C to a final temperature of -18°C. The bread-freezing operation is to be carried out in an air-blast freezing tunnel. It is found that the fan motors are rated at a total of 80 horsepower and measurements suggest that they are operating at around 90% of their rating, under which conditions their manufacturer’s data claims a motor efficiency of 86%. If 1 ton of refrigeration is 3.52 kW, estimate the maximum refrigeration load imposed by this freezing installation assuming that fans and motors are all within the freezing tunnel insulation and the heat-loss rate from the tunnel to the ambient air has been found to be 6.3 kW.Extraction rate from freezing bread (maximum) = 104 kW |
| A. | 46 tons of refrigeration |
| B. | 40 tons of refrigeration |
| C. | 56 tons of refrigeration |
| D. | 50 tons of refrigeration |
| Answer» B. 40 tons of refrigeration | |
| 3. |
A textile dryer is found to consume 4 m3 / hr of natural gas with a calorific value of 800 kJ/mole. If the throughput of the dryer is 60 kg of wet cloth per hour, drying it from 55% moisture to 10% moisture, estimate the overall thermal efficiency of the dryer taking into account the latent heat of evaporation only.Assuming the natural gas to be at standard temperature and pressure at which 1 mole occupies 22.4 liters and Latent heat of evaporation = 2257 kJ/K. |
| A. | 40% |
| B. | 50% |
| C. | 58% |
| D. | 48% |
| Answer» E. | |
| 4. |
If 35,000kg of whole milk containing 4% fat is to be separated in a 6 hour period into skim milk with 0.45% fat and cream with 45% fat, what are the flow rates of the two output streams from a continuous centrifuge which accomplishes this separation? (Basis 1 hour’s flow of whole milk.) |
| A. | 5678 kg/hr |
| B. | 5368 kg/hr |
| C. | 2567 kg/hr |
| D. | 2578 kg/hr |
| Answer» C. 2567 kg/hr | |
| 5. |
Skim milk is prepared by the removal of some of the fat from whole milk. This skim milk is found to contain 90.5% water, 3.5% protein, 5.1% carbohydrate, 0.1% fat and 0.8% ash. If the original milk contained 4.5% fat, Calculate its composition assuming that fat only was removed to make the skim milk and that there are no losses in processing. |
| A. | Fat = 4.5%, Water = 86.5%, protein = 3.3%, carbohydrate = 4.9%, ash = 0.8% |
| B. | Fat = 4.5%, Water = 83.5%, protein = 3.0%, carbohydrate = 4.5%, ash = 0.9% |
| C. | Fat = 4.6%, Water = 80.5%, protein = 3.5%, carbohydrate = 4.0%, ash = 0.9% |
| D. | Fat = 4.6%, Water = 81.5%, protein = 3.3%, carbohydrate = 4.5%, ash = 0.8% |
| Answer» B. Fat = 4.5%, Water = 83.5%, protein = 3.0%, carbohydrate = 4.5%, ash = 0.9% | |
| 6. |
In following figure deflection angle at Q is teta L. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Deflection angle may vary from __________ to __________ |
| A. | 0° to 90° |
| B. | 90° to 180° |
| C. | 0° to 180° |
| D. | 0° to 270° |
| Answer» B. 90° to 180° | |
| 8. |
Transversing by deflection angles is more suitable for surveys of roads railways, pipe lines etc. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
In which of the following transverse method angles are measured by theodolite? |
| A. | By fast needle |
| B. | By direct observation of angles |
| C. | By locating details with transit and tape |
| D. | By free needle |
| Answer» C. By locating details with transit and tape | |
| 10. |
Air enters a frictionless adiabatic horizontal nozzle at 12 bar and 167°C with inlet velocity 50 m/s and leaves at 3 bar. Take adiabatic index equal to 1.4 and cp = 1.005 kJ/kg-K. |
| A. | 654.78 m/s |
| B. | 321.75 m/s |
| C. | 552.45 m/s |
| D. | 456.87 m/s |
| Answer» D. 456.87 m/s | |
| 11. |
Air at 18 bar and 100°C enters a convergent nozzle. Assume the flow to be isentropic and calculate the sonic velocity. Take adiabatic index equal to 1.4. |
| A. | 353.40 m/s |
| B. | 321.56 m/s |
| C. | 360.87 m/s |
| D. | 400.32 m/s |
| Answer» B. 321.56 m/s | |
| 12. |
The purpose of a steam injector is to force water into the boiler under pressure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following conditions correspond to divergent type diffuser? |
| A. | M < 1 and \(\frac{dA}{A}\)>0 |
| B. | M < 1 and \(\frac{dA}{A}\)>0 |
| C. | M < 1 and \(\frac{dA}{A}\)<0 |
| D. | M > 1 and \(\frac{dA}{A}\)<0 |
| Answer» B. M < 1 and \(\frac{dA}{A}\)>0 | |
| 14. |
A decelerated flow, having fluid velocity greater than the local sonic velocity corresponds to _____ |
| A. | Convergent part of a nozzle |
| B. | Divergent part of a nozzle |
| C. | Convergent part of a diffuser |
| D. | Divergent part of a diffuser |
| Answer» D. Divergent part of a diffuser | |
| 15. |
Which of the following conditions corresponds to divergent part of a nozzle? |
| A. | M < 1 and \(\frac{dP}{P}\) > 0 |
| B. | M < 1 and \(\frac{dP}{P}\) < 0 |
| C. | M > 1 and \(\frac{dP}{P}\) < 0 |
| D. | M > 1 and \(\frac{dP}{P}\) > 0 |
| Answer» D. M > 1 and \(\frac{dP}{P}\) > 0 | |
| 16. |
Which of the following statements regarding the Mach number is TRUE, when the fluid reaches the throat of a nozzle? |
| A. | It becomes unity |
| B. | It is less than one |
| C. | It is greater than one |
| D. | Mach number is not defined at throat of a nozzle |
| Answer» B. It is less than one | |
| 17. |
In case of accelerated flow, when the pressure decreases along the flow direction and Mach number is less than one, it corresponds to _____ |
| A. | Convergent part of a nozzle |
| B. | Divergent part of a nozzle |
| C. | Throat of a nozzle |
| D. | Convergent part of a diffuser |
| Answer» B. Divergent part of a nozzle | |
| 18. |
Which of the following expressions is correct? (P – fluid pressure, M- Mach number, A – cross-sectional area of nozzle/diffuser) |
| A. | \(\frac{dA}{A}=\frac{1}{γ}\frac{dP}{P}\big\{\frac{M^2}{1-M^2} \big\} \) |
| B. | \(\frac{dA}{A}=\frac{1}{γ}\frac{dP}{P}\big\{\frac{M^2-1}{M^2}\big\} \) |
| C. | \(\frac{dA}{A}=\frac{1}{γ}\frac{dP}{P}\big\{\frac{1-M^2}{M^2} \big\} \) |
| D. | \(\frac{1}{γ}\frac{dA}{A}=\frac{dP}{P}\big\{\frac{1-M^2}{M^2} \big\} \) |
| Answer» D. \(\frac{1}{γ}\frac{dA}{A}=\frac{dP}{P}\big\{\frac{1-M^2}{M^2} \big\} \) | |
| 19. |
Which of the following expressions correctly represents the relationship between cross-sectional area of a nozzle, fluid velocity and specific volume? |
| A. | \(\frac{dA}{A}+\frac{dC}{C}=\frac{dv}{v} \) |
| B. | \(\frac{dA}{A}-\frac{dC}{C}=\frac{dv}{v} \) |
| C. | \(\frac{dA}{A}+\frac{dC}{C}+\frac{dv}{v}\) = 0 |
| D. | \(\frac{dA}{A}+\frac{dv}{v}=\frac{dC}{C} \) |
| Answer» B. \(\frac{dA}{A}-\frac{dC}{C}=\frac{dv}{v} \) | |
| 20. |
Find value of c(a point in a curve where slope of tangent to curve is zero) wheref(x) = \(\begin{cases}x^2-x & 0 |
| A. | 1.5 |
| B. | Rolle’s Theorem is not applied, because function is not continuous in interval [0,2] |
| C. | Rolle’s Theorem is not applied, because function is not differential in interval (0,2) |
| D. | Function is both continuous and differentiable but Rolle’s theorem is not applicable as f(0) ≠ f(2) |
| Answer» D. Function is both continuous and differentiable but Rolle’s theorem is not applicable as f(0) ≠ f(2) | |
| 21. |
Find value of c(a point in f(x) where slope of tangent to curve is zero) wheref(x) = \(\begin{cases}Tan(x) & 0 |
| A. | π⁄4 |
| B. | Rolle’s Theorem is not applied, because function is not continuous in interval [0, π⁄2] |
| C. | Rolle’s Theorem is not applied, because function is not differential in interval (0, π⁄2) |
| D. | Function is both continuous and differentiable but Rolle’s theorem is not applicable as f(0) ≠ f(π⁄2) |
| Answer» C. Rolle’s Theorem is not applied, because function is not differential in interval (0, π⁄2) | |
| 22. |
Find the value of ‘a’ & ‘b’ if f(x) = ax2 + bx + sin(x) is continuous over [0, π] and differentiable over (0, π) and satisfy the Rolle’s theorem at point c = π⁄4. |
| A. | 0.45,1.414 |
| B. | 0.45,-1.414 |
| C. | -0.45,1.414 |
| D. | -0.45,-1.414 |
| Answer» C. -0.45,1.414 | |
| 23. |
Find the value of ‘a’ if f(x) = ax2+32x+4 is continuous over [-4, 0] and differentiable over (-4, 0) and satisfy the Rolle’s theorem. Hence find the point in interval (-2,0) at which its slope of a tangent is zero |
| A. | 2, -2 |
| B. | 2, -1 |
| C. | 8, -1 |
| D. | 8, -2 |
| Answer» E. | |
| 24. |
f(x) = 3Sin(2x), is continuous over interval [0,π] and differentiable over interval (0,π) and c ∈(0,π) |
| A. | π |
| B. | π⁄2 |
| C. | π⁄4 |
| D. | π⁄8 |
| Answer» C. π⁄4 | |
| 25. |
Find value of c where f(x) = sin(x) ex tan(x), c ∈ (0,∞) |
| A. | Tan-1[-(2+c2)/(1+c2) |
| B. | Tan-1[-(2-c2)/(1+c2)] |
| C. | Tan-1[(2+c2)/(1+c2)] |
| D. | Rolle’s Theorem is not applied, Cannot find the value of c |
| Answer» E. | |
| 26. |
Find the value of c if f(x) = sin3(x)cos(x), is continuous over interval [0, π⁄2] and differentiable over interval (0, π⁄2) and c ∈(0, π⁄2) |
| A. | 0 |
| B. | π⁄6 |
| C. | π⁄3 |
| D. | π⁄2 |
| Answer» D. π⁄2 | |
| 27. |
Find the value of c if f(x) = x(x-3)e3x, is continuous over interval [0,3] and differentiable over interval (0, 3) and c ∈(0,3) |
| A. | 0.369 |
| B. | 2.703 |
| C. | 0 |
| D. | 3 |
| Answer» C. 0 | |
| 28. |
Find the value of c(a point where slope of a atangent to curve is zero) if f(x) = Sin(x) is continuous over interval [0,π] and differentiable over interval (0, π) and c ∈(0,π) |
| A. | π |
| B. | π⁄2 |
| C. | π⁄6 |
| D. | π⁄4 |
| Answer» C. π⁄6 | |
| 29. |
Rolle’s theorem is applicable to the |
| A. | Functions differentiable in closed interval [a, b] and continuous in open interval (a, b) only and having same value at point ‘a’ and ‘b’b) Functions continuous in closed interval [a, b] only and having same value at point ‘a’ and ‘b’c) Functions continuous in closed interval [a, b] and differentiable in open interval (a, |
| B. | only and having same value at point ‘a’ and ‘b’b) Functions continuous in closed interval [a, b] only and having same value at point ‘a’ and ‘b’ |
| C. | Functions continuous in closed interval [a, b] and differentiable in open interval (a, b) only and having same value at point ‘a’ and ‘b’ |
| D. | Monotonically Increasing funtions |
| Answer» D. Monotonically Increasing funtions | |
| 30. |
Rolle’s Theorem is a special case of |
| A. | Lebniz Theorem |
| B. | Mean Value Theorem |
| C. | Taylor Series of a function |
| D. | Leibnit’x Theorem |
| Answer» C. Taylor Series of a function | |
| 31. |
Rolle’s Theorem tells about the |
| A. | Existence of point c where derivative of a function becomes zero |
| B. | Existence of point c where derivative of a function is positive |
| C. | Existence of point c where derivative of a function is negative |
| D. | Existence of point c where derivative of a function is either positive or negative |
| Answer» B. Existence of point c where derivative of a function is positive | |
| 32. |
The power input at the port 1 of resistive T junction is equally divided among the 2 output ports of the T junction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 33. |
The power delivered to the input port of a resistive power divider is equal to the source voltage applied. |
| A. | True |
| B. | False |
| Answer» C. | |
| 34. |
The diagonal elements of the s matrix of a resistive T junction are: |
| A. | 0 |
| B. | 1 |
| C. | 0.5 |
| D. | 1.5 |
| Answer» B. 1 | |
| 35. |
If the input power is divided in the ratio of 2:1 in a T- junction coupler and the characteristic impedance of the 2 output lines is 150Ω and 75Ω, then the impedance of the input line is: |
| A. | 100Ω |
| B. | 50Ω |
| C. | 150Ω |
| D. | None of the mentioned |
| Answer» C. 150Ω | |
| 36. |
A T junction power divider can be used only for division of power. |
| A. | True |
| B. | False |
| Answer» C. | |
| 37. |
A lot follows hyper geometric distribution for defects found in its items. It contains 100 items out of which, 5 are defective. If 10 items are selected without replacement in a random order, what is the probability of finding 0 defective items? |
| A. | 0.5837521 |
| B. | 0.4162479 |
| C. | 0.5708992 |
| D. | 0.4522222 |
| Answer» B. 0.4162479 | |
| 38. |
For a experiment following binomial distribution, the mean is 54.3, and the number of independent trials is 121. What will be the probability of failure? |
| A. | 0.55123 |
| B. | 0.51000 |
| C. | 0.44877 |
| D. | 0.45700 |
| Answer» B. 0.51000 | |
| 39. |
For a company, which uses Poisson distributions to describe all the defects in its product, which has the parameter λ=4, what will be the probability of finding the selected product from a sample that will have 2 or less than 2 defects? |
| A. | 0.2381 |
| B. | 0.2561 |
| C. | 0.2104 |
| D. | 0.3310 |
| Answer» B. 0.2561 | |
| 40. |
The mean of a Poisson distribution is _____ |
| A. | Greater than λ |
| B. | Lesser than λ |
| C. | Equal to λ |
| D. | Having no relation with λ |
| Answer» D. Having no relation with λ | |
| 41. |
Poisson distribution is given by ____ |
| A. | \(p(x) = \frac{e^{-λ} λ^x}{x!}\) |
| B. | \(p(x) = \frac{e^{-x} λ^x}{x}\) |
| C. | \(p(x) = \frac{e^{-λ} λ^x}{x}\) |
| D. | \(p(x) = \frac{e^{-λ} λ^x}{λ!}\) |
| Answer» B. \(p(x) = \frac{e^{-x} λ^x}{x}\) | |
| 42. |
The binomial distribution is given by _____ |
| A. | \(p(x) = \left(n \atop x\right) p^x (1-p)^{n-x}\) |
| B. | \(p(x) = \left(x \atop n\right) p^{n-x} (1-p)^x\) |
| C. | \(p(x) = \left(x \atop n\right) p^x (1-p)^{n-x}\) |
| D. | \(p(x) = \left(n \atop x\right) p^{n-x} (1-p)^x\) |
| Answer» B. \(p(x) = \left(x \atop n\right) p^{n-x} (1-p)^x\) | |
| 43. |
The independent trials which have either a “success” or a “failure” as an outcome, are called ____ |
| A. | Normal trials |
| B. | Bernoulli trials |
| C. | Poisson’s trials |
| D. | Hyper geometric trials |
| Answer» C. Poisson’s trials | |
| 44. |
Probability function for hyper geometric probability distribution is _____ |
| A. | \(p(x) = \frac{\left(D \atop x\right)\left(N-D \atop n-x\right)}{\left(N \atop n\right)} \) |
| B. | \(p(x) = \frac{\left(D \atop x\right)\left(N-D \atop n-x\right)}{\left(n \atop N\right)} \) |
| C. | \(p(x) = \frac{\left(x \atop D\right)\left(N-D \atop n-x\right)}{\left(N \atop n\right)} \) |
| D. | \(p(x) = \frac{\left(D \atop x\right)\left(n-x \atop N-D\right)}{\left(N \atop n\right)} \) |
| Answer» B. \(p(x) = \frac{\left(D \atop x\right)\left(N-D \atop n-x\right)}{\left(n \atop N\right)} \) | |
| 45. |
Which of these is not a discrete probability distribution? |
| A. | Hyper geometric Distribution |
| B. | Binomial Distribution |
| C. | Normal Distribution |
| D. | Poisson Distribution |
| Answer» D. Poisson Distribution | |
| 46. |
Which of the following disease is associated with the disruption of hemidesmosomes? |
| A. | Atherosclerosis |
| B. | Epidermolysis bullosa |
| C. | Myocardial infarction |
| D. | Zellweger syndrome |
| Answer» C. Myocardial infarction | |
| 47. |
Which genetic disorder is associated with accumulation of proteoglycans? |
| A. | Polysaccharidoses |
| B. | Mucomonosaccharidoses |
| C. | Mucopolysaccharidoses |
| D. | Monosaccharidoses |
| Answer» D. Monosaccharidoses | |
| 48. |
What is the use of matrix-bound nanovesicles? |
| A. | Enzyme technology |
| B. | Tissue engineering |
| C. | Biofuel production |
| D. | Pharma product production |
| Answer» C. Biofuel production | |
| 49. |
Hemidesmosomes are present in keratinocytes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 50. |
The movement of cell with respect to rigidity is called durotaxis. |
| A. | True |
| B. | False |
| Answer» B. False | |