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MCQOPTIONS
This section includes 2242 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.
| 651. |
Which of the following helps in dissipating the residual energy and to reduce the length of the jump or the basin? |
| A. | Dentated sills |
| B. | Chute blocks |
| C. | Roller bucket |
| D. | Baffle piers |
| Answer» B. Chute blocks | |
| 652. |
_____________________ are suitable only for low spillways or weirs. |
| A. | Chute blocks |
| B. | Sloping aprons |
| C. | Baffle wall or friction blocks |
| D. | Roller buckets |
| Answer» D. Roller buckets | |
| 653. |
In the case of dam spillways, the approaching Froude number usually lies in the range of __________ |
| A. | less than 2.5 m |
| B. | 2.5 – 4.5 |
| C. | 4.5 – 9.0 |
| D. | more than 9.0 |
| Answer» D. more than 9.0 | |
| 654. |
Standard stilling basin is provided at the toe of a dam spillway for energy dissipation is usually provided with auxiliary devices like chute blocks and dentated sills for the basic purpose of reducing the length of the stilling basin from about ________________ |
| A. | 6 y2 to 4 y2 |
| B. | 4 y2 to 2 y2 |
| C. | 6 y2 to 2 y2 |
| D. | 3 y2 to y2 |
| Answer» B. 4 y2 to 2 y2 | |
| 655. |
The Froude number of a hydraulic jump is 5.5. The jump can be classified as ____________ |
| A. | a weak jump |
| B. | an oscillating jump |
| C. | rough and choppy jump |
| D. | steady jump |
| Answer» E. | |
| 656. |
Which of the following stilling basin is applicable to only rectangular cross-sections? |
| A. | U.S.B.R stilling basin-II |
| B. | U.S.B.R stilling basin-IV |
| C. | U.S.B.R stilling basin-I |
| D. | U.S.B.R stilling basin-III |
| Answer» C. U.S.B.R stilling basin-I | |
| 657. |
When the Froude number is in the range of 2.5 to 4.5, the jump is ____________________ |
| A. | weak and energy loss is low |
| B. | troublesome and oscillating |
| C. | steady jump |
| D. | strong jump |
| Answer» C. steady jump | |
| 658. |
Standard USBR stilling basin-II is useful for energy dissipation at the bottom of the overflow structure, if the approaching Froude number is ________________ |
| A. | less than 4.5 |
| B. | more than 4.5 |
| C. | less than 2.5 |
| D. | more than 2.5 |
| Answer» C. less than 2.5 | |
| 659. |
A very steady and stable hydraulic jump is usually formed in the flows involving the approaching Froude number in the range of _____________________ |
| A. | less than 2.5 |
| B. | 2.5 to 4.5 |
| C. | 4.5 to 9.0 |
| D. | more than 9.0 |
| Answer» D. more than 9.0 | |
| 660. |
A troublesome and oscillating hydraulic jump is normally met in cases of _____________ |
| A. | weirs and barrages |
| B. | overflow spillways of dams |
| C. | weirs |
| D. | large spillways |
| Answer» B. overflow spillways of dams | |
| 661. |
In a vapor compression refrigeration system, the coefficient of performance is observed as 10. If the enthalpy after compression is 1368.28 kJ/kg and after condensation is 598.58 kJ/kg. If the system works on 50% of the C.O.P., then what is the value of enthalpy after evaporation? |
| A. | 1220 |
| B. | 1210 |
| C. | 1240 |
| D. | 1280 |
| Answer» D. 1280 | |
| 662. |
If a process 1 – 2 undergoes a throttling. Which of the following represents the process 1 – 2? |
| A. | T1 = T2 |
| B. | S1 = S2 |
| C. | P1 = P2 |
| D. | H1 = H2 |
| Answer» E. | |
| 663. |
Find out the value of C.O.P. for the given values of enthalpies.h1 = 1126.25 kJ/kgh4 = 250.25 kJ/kgW = 120 kJ/kg |
| A. | 5.3 |
| B. | 6.3 |
| C. | 7.3 |
| D. | 8.3 |
| Answer» D. 8.3 | |
| 664. |
What is the value of C.O.P. for the following p-h chart? |
| A. | (h1 − h4) / (h2 − h1) |
| B. | (h3 − h4) / (h2 − h1) |
| C. | (h2 − h4) / (h2 − h3) |
| D. | (h1 − h2) / (h3 − h4) |
| Answer» B. (h3 − h4) / (h2 − h1) | |
| 665. |
What does point 2 say about the state of refrigerant? |
| A. | Wet vapor |
| B. | Dry saturated vapor |
| C. | Superheated vapor |
| D. | Liquid refrigerant |
| Answer» C. Superheated vapor | |
| 666. |
What does the process 3-4 represent? |
| A. | Condensation |
| B. | Evaporation |
| C. | Compression |
| D. | Expansion |
| Answer» E. | |
| 667. |
What does the process 2-3 represent? |
| A. | Condensation |
| B. | Evaporation |
| C. | Compression |
| D. | Expansion |
| Answer» B. Evaporation | |
| 668. |
What does the process 1-2 represent? |
| A. | Condensation |
| B. | Evaporation |
| C. | Compression |
| D. | Expansion |
| Answer» D. Expansion | |
| 669. |
Refrigerating effect corresponds to which of the following processes? |
| A. | Condensing process |
| B. | Vaporizing process |
| C. | Compression process |
| D. | Expansion process |
| Answer» C. Compression process | |
| 670. |
The frequency of the sinusoid and the filter leakage fraction, these two criteria are used for ____________ |
| A. | Detection of arrhythmias |
| B. | Detection of QRS complex |
| C. | Detection of Ventricular fibrillation |
| D. | Detection of Heart-rate |
| Answer» D. Detection of Heart-rate | |
| 671. |
Friesen compared _______ of nine types of QRS detection algorithms. |
| A. | QRS complex sensitivity |
| B. | Noise sensitivity |
| C. | Motion artifact |
| D. | Muscle artifact |
| Answer» C. Motion artifact | |
| 672. |
The heart rate is computed by averaging the most recent _________________ |
| A. | 12 P waves |
| B. | 12 R-R intervals |
| C. | 12 QRS complex |
| D. | 12 R waves |
| Answer» C. 12 QRS complex | |
| 673. |
If a flutter or sinusoidal wave-form persists for more than __________ seconds in any ECG channel, then the monitor alarms for ventricular fibrillation. |
| A. | 8 sec |
| B. | 2 sec |
| C. | 4 sec |
| D. | 12 sec |
| Answer» D. 12 sec | |
| 674. |
In the Beat Labeling, if the signal quality is not good, the algorithm assigns the label ______ and ______ |
| A. | Supraventricular premature, inoperative |
| B. | Inoperative, artifact |
| C. | Artifact, Supraventricular premature |
| D. | Ventricular ectopic, inoperative |
| Answer» C. Artifact, Supraventricular premature | |
| 675. |
If the height of the P wave is X, then the height of the R wave is _____ |
| A. | X/32 |
| B. | 32/X |
| C. | X/16 |
| D. | 32X |
| Answer» E. | |
| 676. |
The area of the P wave is ______ wide and ends ______ before the R wave peak. |
| A. | 120 ms, 200 ms |
| B. | 200 ms, 120 ms |
| C. | 100 ms, 215 ms |
| D. | 215 ms, 100 ms |
| Answer» C. 100 ms, 215 ms | |
| 677. |
What is the value of the refractory period from the previously identified QRS complex? |
| A. | 200 ms |
| B. | 198 ms |
| C. | 192 ms |
| D. | 215 ms |
| Answer» D. 215 ms | |
| 678. |
A model of the normal QRS complex, called ___________ |
| A. | ECG model |
| B. | QRS model |
| C. | Template |
| D. | Detection model |
| Answer» D. Detection model | |
| 679. |
Which option is used with paste command for joining lines? |
| A. | -s |
| B. | -c |
| C. | -a |
| D. | -e |
| Answer» B. -c | |
| 680. |
Which command is used for pasting files? |
| A. | cut |
| B. | paste |
| C. | tail |
| D. | head |
| Answer» C. tail | |
| 681. |
Which one of the following commands is incorrect? |
| A. | $ cut -d “|” -f 1,4 emp.lst |
| B. | $ cut -c -3 emp.lst |
| C. | $ tail -c 511 foo |
| D. | $ tail -c foo |
| Answer» E. | |
| 682. |
The following command will produce an error. |
| A. | True |
| B. | FalseView Answer |
| Answer» C. | |
| 683. |
To extract specific columns from a file, ____ command is used.a) tailb) headc) prd) cut 3.The expression cut -c -3 emp.lst will cut columns number _____ |
| A. | tailb) headc) prd) cut 3.The expression cut -c -3 emp.lst will cut columns number _____a) 3 |
| B. | headc) prd) cut 3.The expression cut -c -3 emp.lst will cut columns number _____a) 3b) 1 |
| C. | prd) cut 3.The expression cut -c -3 emp.lst will cut columns number _____a) 3b) 1c) 1-3 |
| D. | cut 3.The expression cut -c -3 emp.lst will cut columns number _____a) 3b) 1c) 1-3d) 0View Answer |
| Answer» E. | |
| 684. |
Which option is used with the tail command for extracting bytes instead of lines? |
| A. | -f |
| B. | -n |
| C. | -c |
| D. | -a |
| Answer» D. -a | |
| 685. |
____________ in EGR results in some cycle partial burns and, in the extreme, total misfires. |
| A. | Decrease |
| B. | Increase |
| C. | Consistency |
| D. | None of the mentioned |
| Answer» B. Increase | |
| 686. |
The flow rate of EGR is not controlled by the Engine management system. |
| A. | True |
| B. | False |
| Answer» C. | |
| 687. |
EGR combines with the exhaust residual left in the cylinder from the previous cycle to effectively reduce the ____________ combustion temperature. |
| A. | minimum |
| B. | maximum |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 688. |
H2 emissions occur under ____________ operating conditions. |
| A. | rich |
| B. | lean |
| C. | constant |
| D. | none of the mentioned |
| Answer» B. lean | |
| 689. |
____________ is collected during engine startup time when the catalytic converter is cold, and then later released back into the exhaust flow when the converter is hot. |
| A. | HC |
| B. | CO |
| C. | CO2 |
| D. | H2O |
| Answer» B. CO | |
| 690. |
Cyanuric acid is a ____________ solid material that sublimes in the exhaust flow. |
| A. | high-cost |
| B. | low-cost |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 691. |
The area on the earth that is covered by a satellite is called __________ |
| A. | plate |
| B. | footprint |
| C. | downlink |
| D. | earth station |
| Answer» C. downlink | |
| 692. |
“Station-keeping” refers to ___________ |
| A. | antenna maintenance |
| B. | power level adjustments |
| C. | orbital adjustments |
| D. | range of frequencies |
| Answer» D. range of frequencies | |
| 693. |
What is the full form of MTSO? |
| A. | Minimum Transmitted Signal Output |
| B. | Maximum Transmitted Signal Output |
| C. | Mobile Telephone Switching Office |
| D. | Mobile Telephone Signal Office |
| Answer» D. Mobile Telephone Signal Office | |
| 694. |
A Bluetooth “piconet” has ________ |
| A. | 1 node |
| B. | 2 nodes |
| C. | 2 to 8 nodes |
| D. | 2 to 16 nodes |
| Answer» D. 2 to 16 nodes | |
| 695. |
Whitworth quick return motion mechanism is an inversion of a double slider crank chain. |
| A. | True |
| B. | False |
| Answer» C. | |
| 696. |
In a coupling rod of a locomotive, each of the four pairs is a _____________ pair. |
| A. | sliding |
| B. | turning |
| C. | rolling |
| D. | screw |
| Answer» C. rolling | |
| 697. |
Why Monomeric saturated aliphatic carboxylic acids show carbonyl stretching frequency near 1760 cm-1, while saturated aliphatic ketones near 1720 cm-1? |
| A. | Mesomeric (M) effect is dominant in acids over the inductive (I) effect |
| B. | I effect is dominant in carboxylic acids over the mesomeric effect |
| C. | I effect on ketones is dominant over the M effect |
| D. | M effect in ketones is dominant |
| Answer» C. I effect on ketones is dominant over the M effect | |
| 698. |
The phosphorescence spectrum of the excited species is due to which transition? |
| A. | Singlet to triplet transitions |
| B. | Triplet to singlet transitions |
| C. | Vibration modes |
| D. | Electron spin transitions |
| Answer» C. Vibration modes | |
| 699. |
What is the number of vibrational degrees of freedom in C6H5CH3? |
| A. | 39 |
| B. | 15 |
| C. | 18 |
| D. | 40 |
| Answer» B. 15 | |
| 700. |
A compound C8 H6 decolorizes Br2 in CCl4 and gives a white precipitate with Tollen’s reagent. It has sharp band at 3300 cm-l and weak bands at 3085, 2110 cm-l. What is this compound? |
| A. | Phenyl acetylene |
| B. | Phenyl propylene |
| C. | Phenyl ethylene |
| D. | Octene |
| Answer» B. Phenyl propylene | |