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.
| 351. |
What is mechanical efficiency? |
| A. | The ratio of friction power to brake power |
| B. | The ratio of the brake power to indicated power |
| C. | The ratio of indicated power to friction power |
| D. | The ratio of friction power to indicated power |
| Answer» E. | |
| 352. |
Which part of mower is used to regulate the height of cut above the ground? |
| A. | Ledger plate |
| B. | Wearing plate |
| C. | Shoe |
| D. | Grass board |
| Answer» D. Grass board | |
| 353. |
A mower has drive wheel of 60 cm diameter. The crank of the mower makes 600 rev/min when it is driven by a tractor, moving at a speed of 2.3 km/hr. If the speed ratio between the crank wheel and land wheel is changed to 27:1, calculate the increase in speed of mower to maintain same speed of crank. |
| A. | 0.19 km/hr |
| B. | 0.67 km/hr |
| C. | 0.11 km/hr |
| D. | 0.21 km/hr |
| Answer» E. | |
| 354. |
How many hectares per day of 10 hours can be cut by a combine with 4 metre cutter bar, when it is running at 4 k/hr? |
| A. | 16ha |
| B. | 20 ha |
| C. | 28 ha |
| D. | 8 ha |
| Answer» B. 20 ha | |
| 355. |
What power is required to pull 1.2 mete mower working at a speed of 4.8 km/hr, if there is a load of 50 kg per metre length of mower and mechanical efficiency is 80%? |
| A. | 1 KW |
| B. | 0.98 KW |
| C. | 0.23 KW |
| D. | 2 KW |
| Answer» C. 0.23 KW | |
| 356. |
Calculate the total time required to harvest 2.5 hectares of grass by means of a 2 metre mower being operated at 4 km/hr. (Field efficiency=80%) |
| A. | 2.5 hrs |
| B. | 1.2 hrs |
| C. | 3.9 hrs |
| D. | 7 hrs |
| Answer» D. 7 hrs | |
| 357. |
When the knife section stops in the centre of its guard on every stroke, it is known as? |
| A. | Re-embankment |
| B. | Reinforcement |
| C. | Registration |
| D. | Rescue |
| Answer» D. Rescue | |
| 358. |
What is the difference between each knife clips? |
| A. | 5-15 cm |
| B. | 40-50 cm |
| C. | 35-45 cm |
| D. | 20-30 cm |
| Answer» E. | |
| 359. |
Which clutch is used in the driving unit of a mower? |
| A. | Fluid coupling |
| B. | Dog clutch |
| C. | Friction clutch |
| D. | Single plate |
| Answer» C. Friction clutch | |
| 360. |
Which part operates the tractor drawn semi-mounted or mounted type mowers? |
| A. | PTO shaft |
| B. | Cutter |
| C. | Pitman |
| D. | Grass board |
| Answer» B. Cutter | |
| 361. |
__________ systems, these systems have to utilize efficient encoding of information because their transmissions have limited bandwidth during broadcast. |
| A. | TV |
| B. | Video color |
| C. | Grey body |
| D. | Red body |
| Answer» C. Grey body | |
| 362. |
__________ values could be obtained by the comparison method where the color is matched by mixing 3 primary standards until visual observation gives a match, spectrophotometric analysis, or utilize of trichromatic methods employing analysis with 3 separate filters. |
| A. | Chromaticity |
| B. | Kubelka |
| C. | Tristimulus |
| D. | Black body |
| Answer» D. Black body | |
| 363. |
The chromaticity diagram is a plot of x and y values. The data are plotted every 10 nm from 380 nano meter to 720 nano meter; plotting every 1 nm would have made the curve smoother. |
| A. | Monochromaticity |
| B. | Chromaticity |
| C. | Blindness |
| D. | Transparency |
| Answer» C. Blindness | |
| 364. |
If one ignores brightness, then a color plane that intersects through the space; such a diagram is known as chromaticity chart and takes into account hue and saturation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 365. |
Any color of any brightness could then be plotted on a 3—dimensional coordinate system, sometimes known as a __________ |
| A. | Color space |
| B. | Dimensions |
| C. | String |
| D. | Munsell |
| Answer» B. Dimensions | |
| 366. |
Since there are 3 types of color sensors in the human eye, it should be possible to define color by 3 coefficients corresponding to the primary colors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 367. |
In a PNP transistor operating in active region, the main stream of current is_________ |
| A. | drift of holes |
| B. | drift of electrons |
| C. | diffusion of holes |
| D. | diffusion of electrons |
| Answer» D. diffusion of electrons | |
| 368. |
In a PNP germanium transistor, the cut in voltage is about_________ |
| A. | -0.1V |
| B. | -0.01V |
| C. | -0.05V |
| D. | -0.07V |
| Answer» B. -0.01V | |
| 369. |
A germanium transistor used as an amplifier has a collector cut off current ICBO=10µA at a temperature 27°C and β=50. What is the collector current when the base current is 0.25mA? |
| A. | 10.76mA |
| B. | 13.01mA |
| C. | 15.67mA |
| D. | 11.88Ma |
| Answer» C. 15.67mA | |
| 370. |
A transistor has an IC of 100mA and IB of 0.5mA. What is the value of αdc? |
| A. | 0.565 |
| B. | 0.754 |
| C. | 1.24 |
| D. | 0.995 |
| Answer» E. | |
| 371. |
A common base transistor amplifier has an input resistance of 20Ω and output resistance of 100kΩ. If a signal of 400mV is applied between emitter and base, find the voltage amplification. Assume αac to be one. |
| A. | 20 |
| B. | 50 |
| C. | 30 |
| D. | 25 |
| Answer» C. 30 | |
| 372. |
The total emitter current (IE) is given by_________ |
| A. | IE = IpE * InE |
| B. | IE = IpE – InE |
| C. | IE = IpE / InE |
| D. | IE = IpE + InE |
| Answer» E. | |
| 373. |
The emitter current consist of_________ |
| A. | electrons passing from collector to emitter |
| B. | holes crossing from base to collector |
| C. | electron current Ine constituted by electrons |
| D. | immobile charge carriers |
| Answer» D. immobile charge carriers | |
| 374. |
The pavement condition factor for good condition is? |
| A. | 0.25 |
| B. | 0.35 |
| C. | 0.45 |
| D. | 1.0 |
| Answer» E. | |
| 375. |
In full depth repairs the diameter of the hole is greater than the diameter of dowel bar by ___________ |
| A. | 1 mm |
| B. | 1.5 mm |
| C. | 2.0 mm |
| D. | 2.5 mm |
| Answer» D. 2.5 mm | |
| 376. |
The partial depth repairs are limited to a slab height of less than ___________ |
| A. | 150 mm |
| B. | 100 mm |
| C. | 90 mm |
| D. | 75 mm |
| Answer» E. | |
| 377. |
The diameter of bars used for insertion in crack stitching method is ___________ |
| A. | 8 mm |
| B. | 10 mm |
| C. | 12 mm |
| D. | 16 mm |
| Answer» E. | |
| 378. |
The method not used in structural evaluation of CC pavement is? |
| A. | Visual inspection |
| B. | Deflection test |
| C. | Non destructive testing |
| D. | Benkleman test |
| Answer» E. | |
| 379. |
The structural distress in the CC pavement is not due to ___________ |
| A. | Excessive loading |
| B. | Inadequate thickness |
| C. | Long spacing |
| D. | Erosion |
| Answer» E. | |
| 380. |
The depth of groove in skid resistance test is ___________ |
| A. | 0.5 mm |
| B. | 1.0 mm |
| C. | 1.5 mm |
| D. | 2.0 mm |
| Answer» D. 2.0 mm | |
| 381. |
The surface texture may be calculated by ___________ |
| A. | Abrasion test |
| B. | Impact test |
| C. | British pendulum number |
| D. | Viscosity test |
| Answer» D. Viscosity test | |
| 382. |
The probable causes for loss of surface texture don’t include ___________ |
| A. | Poor texturing |
| B. | Abrasion |
| C. | Movement of Traffic |
| D. | Use of durable materials |
| Answer» E. | |
| 383. |
A civil engineer has to deal with which rock in the majority of cases? |
| A. | Igneous rocks |
| B. | Sedimentary rocks |
| C. | Metamorphic rocks |
| D. | Ultra-basic igneous rocks |
| Answer» C. Metamorphic rocks | |
| 384. |
The highest grade of coal is ____________ |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» E. | |
| 385. |
What is the hardness of the lignite grade of coal? |
| A. | 0.5 |
| B. | 2.5 |
| C. | 5.5 |
| D. | 9 |
| Answer» C. 5.5 | |
| 386. |
The other name for brown coal is ____________ |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» C. Bituminous | |
| 387. |
The grade of coal with very low calorific value is ____________ |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» B. Lignite | |
| 388. |
The major use of limestone is ____________ |
| A. | Primary source material for manufacture of Portland cement |
| B. | Used in metallurgical industries as flux |
| C. | Used as building stone |
| D. | Used as a source of magnesium |
| Answer» B. Used in metallurgical industries as flux | |
| 389. |
Distinct texture shown by limestone is ____________ |
| A. | Sheeting |
| B. | Lamination |
| C. | Fossiliferous nature |
| D. | Mud cracks |
| Answer» D. Mud cracks | |
| 390. |
The non-clastic sedimentary rock chiefly made of carbonate of calcium is ____________ |
| A. | Limestone |
| B. | Sandstone |
| C. | Shale |
| D. | Breccia |
| Answer» B. Sandstone | |
| 391. |
Which is not true of glial cells? |
| A. | Neuron support cells |
| B. | Retain ability to divide in adults |
| C. | Are not able to divide in adults |
| D. | Develop from glioblasts |
| Answer» D. Develop from glioblasts | |
| 392. |
Neuronal migration is the method by which neurons travel from their origin to their final position. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 393. |
The anterior end of neural tube becomes ____________ |
| A. | Spinal cord |
| B. | Brain |
| C. | Axon |
| D. | Backbone |
| Answer» C. Axon | |
| 394. |
Neurotransmission through a synapse is always from _________ to _________ |
| A. | Axon, Dendron |
| B. | Dendron, Axon |
| C. | Brain, spinal cord |
| D. | Spinal cord, brain |
| Answer» B. Dendron, Axon | |
| 395. |
Nerve cell does not divide because they do not have ___________ |
| A. | Nucleus |
| B. | Centrosome |
| C. | Golgi body |
| D. | Mitochondria |
| Answer» C. Golgi body | |
| 396. |
What is the structural and functional unit of the nervous system? |
| A. | Neuron |
| B. | Dendron |
| C. | Axon |
| D. | Brain |
| Answer» B. Dendron | |
| 397. |
Which of the following commands of ex-mode is equivalent to ‘G’ command in command mode? |
| A. | : . |
| B. | : $ |
| C. | : % |
| D. | :w |
| Answer» C. : % | |
| 398. |
Which key is used for absolute movement? |
| A. | f |
| B. | G |
| C. | M |
| D. | ctrl-g |
| Answer» D. ctrl-g | |
| 399. |
We can prefix repeat factor with word navigation commands. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 400. |
What can be done in order to prevent slugging in the fluidized bed? |
| A. | Baffles |
| B. | Increase diameter |
| C. | Proper design of distributor |
| D. | All of the mentioned |
| Answer» E. | |