MCQOPTIONS
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MCQOPTIONS
This section includes 239 Mcqs, each offering curated multiple-choice questions to sharpen your Dairy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Which of the following terms describes the effects of harmonics to industrial power systems? |
| A. | Disturbance to Electric and Electronic Devices |
| B. | Extra Fault Current |
| C. | Lower Losses |
| D. | Increased costs from downtime |
| Answer» B. Extra Fault Current | |
| 202. |
The most economic load on an underground cable is : |
| A. | Greater than its surge loading |
| B. | Less thart the surge loading |
| C. | Equal to the surge loading |
| D. | None of the above is necessary |
| Answer» C. Equal to the surge loading | |
| 203. |
For measuring positive, negative and zero sequence voltages in a system, thereference is taken as : |
| A. | Neutral of the system only |
| B. | Ground only |
| C. | For zero sequence neutral and for positive and negative the ground |
| D. | None of the above |
| Answer» E. | |
| 204. |
Shunt compensation in an EHV line is used to improve |
| A. | stability and fault level |
| B. | fault level and voltage profile |
| C. | voltage profile and stability |
| D. | stability, fault level and voltage profile |
| Answer» C. voltage profile and stability | |
| 205. |
What is transient stability limit? |
| A. | The maximum flow of power through a particular point in the power system without loss of stability when small disturbances occur. |
| B. | The maximum power flow possible through a particular component connected in the power system. |
| C. | The maximum flow of power through a particular point in the power system without loss of stability when large and sudden disturbances occur |
| D. | All of these |
| Answer» D. All of these | |
| 206. |
To obtain a constant current input, a inductor is placed in current source inductor(CSI) in: |
| A. | Parallel |
| B. | Series |
| C. | Both Series and Parallel |
| D. | Not placed at all |
| Answer» C. Both Series and Parallel | |
| 207. |
Double-energy transients are produced in circuits consisting of |
| A. | two or more resistors |
| B. | resistance and inductance |
| C. | resistance and capacitance |
| D. | resistance, inductance and capacitance |
| Answer» E. | |
| 208. |
The power factor angle of a purely inductive circuit is: |
| A. | 45 degree |
| B. | 60 degree |
| C. | 75 degrees |
| D. | 90 degree |
| Answer» E. | |
| 209. |
The harmonic current distortion in adjustable speed drive is_____ |
| A. | Constant |
| B. | Not Constant |
| C. | High |
| D. | low |
| Answer» C. High | |
| 210. |
The following statement describes the effects of poor power quality, EXCEPT |
| A. | Equipment malfunction |
| B. | Increased costs from downtime |
| C. | Premature failure of equipment |
| D. | Reduced maintenance, repair time and expenses |
| Answer» D. Reduced maintenance, repair time and expenses | |
| 211. |
A generator is connected to a synchronous motor. From stability point of view it is preferable to have : |
| A. | Generator neutral reactance grounded and motor neutral resistance grounded |
| B. | Generator and motor neutrals resistance grounded |
| C. | Generator and motor neutrals reactance grounded |
| D. | Generator neutral resistance and motor neutral reactace grounded |
| Answer» E. | |
| 212. |
Consider the following statements : The transient stability of the power system under unbalanced fault conditions can be effectively improved by 1. Excitation control 2. phase-shifting transformer 3. single-pole switching of circuit breakers 4. increasing the turbine input. Of these statements |
| A. | 1 and 2 are correct |
| B. | 2 and 3 are correct |
| C. | 3 and 4 are correct |
| D. | 1 and 3 are correct |
| Answer» D. 1 and 3 are correct | |
| 213. |
There are no transients in pure resistive circuits because they |
| A. | offer high resistance |
| B. | obey Ohm's law |
| C. | have no stored energy |
| D. | are linear circuits |
| Answer» D. are linear circuits | |
| 214. |
Since most of the industrial loads are inductive type, which of the following will help to correct the power factor? |
| A. | Increase lagging reactive current demand of the loads |
| B. | Compensate lagging reactive current by supplying leading reactive current to the power system |
| C. | Compensate leading reactive current by supplying lagging reactive current to the power system |
| D. | Reduce leading reactive current demand of the loads |
| Answer» C. Compensate leading reactive current by supplying lagging reactive current to the power system | |
| 215. |
The Short Interruptions occurs for |
| A. | Less than two complete cycles |
| B. | exact two complete cycles |
| C. | less than one complete cycles |
| D. | exact one complete cycles |
| Answer» D. exact one complete cycles | |
| 216. |
While rising and falling if a wave is not symmetrical, it contains |
| A. | even harmonics in addition to fundamental |
| B. | odd harmonics in addition to fundamental |
| C. | both odd and even harmonics in additions to fundamental |
| D. | none of the above |
| Answer» B. odd harmonics in addition to fundamental | |
| 217. |
Pure inductive circuit takes power (reactive) from the a.c. line when |
| A. | both applied voltage and current rise |
| B. | both applied voltage and current decrease |
| C. | applied voltage decreases but current increases |
| D. | (a) and (b) |
| Answer» D. (a) and (b) | |
| 218. |
The velocity of travelling wave through a cable of relative permittivity 9 is |
| A. | 9 x 108 m/s |
| B. | 3 x 108 m/s |
| C. | 108 m/s |
| D. | 2 x 108 ms |
| Answer» D. 2 x 108 ms | |
| 219. |
With 100% series compensation of lines |
| A. | the circuit is series resonant at power frequency |
| B. | low transient voltage |
| C. | high transient current |
| D. | (a) and (b) |
| Answer» E. | |
| 220. |
An RLC series circuit remains predominantly inductive : |
| A. | At resonance frequency |
| B. | Below resonance frequency |
| C. | Above resonance frequency |
| D. | At the lower half power frequency |
| Answer» D. At the lower half power frequency | |
| 221. |
What is power system stability? |
| A. | The maximum power flow possible through a particular component connected in the power system. |
| B. | The ability of the power system to regain the state of operating equilibrium point when the system is subjected to any disturbances. |
| C. | It is a phenomenon in which a power system losses its operating equilibrium when subjected to large disturbances. |
| D. | All of these |
| Answer» C. It is a phenomenon in which a power system losses its operating equilibrium when subjected to large disturbances. | |
| 222. |
Lightening and Tree striking on a live conductor is an example________ PowerQuality issue. |
| A. | Voltage Sag |
| B. | Voltage Swell |
| C. | Interruption |
| D. | Surge |
| Answer» C. Interruption | |
| 223. |
A lightning arrestor connected between the line and earth in a power system |
| A. | protects the terminal equipment against travelling surges |
| B. | protects the transmission line against lightning stroke |
| C. | suppresses high frequency oscillations in the line |
| D. | reflects back the travelling wave approaching it |
| Answer» B. protects the transmission line against lightning stroke | |
| 224. |
Which of the following explains the reasons for concern with power quality? |
| A. | End-user equipment become more sensitive to power quality due to many microprocessor-based controls |
| B. | The adjustable-speed motor drives helps to reduce harmonic levels |
| C. | Modern load & equipment are less sensitive to power quality variations. |
| D. | Power electronics equipment do not affect the power quality at all. |
| Answer» B. The adjustable-speed motor drives helps to reduce harmonic levels | |
| 225. |
ABOUT_____________PERCENT_OF_THE_CALCIUM_AVAILABLE_IN_THE_FOOD_SUPPLY_IS_PROVIDED_BY_MILK_AND_MILK_PRODUCTS.?$ |
| A. | 66% |
| B. | 76% |
| C. | 86% |
| D. | 96% |
| Answer» C. 86% | |
| 226. |
The pasteurized Milk Ordinance regulates what?$ |
| A. | Grade A milk |
| B. | Manufacturing grade milk |
| C. | Grade B milk |
| D. | Grade C milk |
| Answer» B. Manufacturing grade milk | |
| 227. |
Which_of_the_following_directly_influence(s)_the_total_supply_of_milk?$ |
| A. | Prices paid milk producers |
| B. | Manufacturing plants |
| C. | Costs of fat production |
| D. | Foreign exports |
| Answer» B. Manufacturing plants | |
| 228. |
What marketing tool would be used in the futures market by someone who owns a commodity such as milk and intends to sell it sometime in the future? |
| A. | Basis contract |
| B. | Pooling contract |
| C. | Short Hedge |
| D. | Speculating buyer |
| Answer» D. Speculating buyer | |
| 229. |
The cheese price series is based on 63 U.S. cheese plants that make 80-85 percent of the bulk Cheddar. What is the price series called? |
| A. | NASS Cheese Price Survey |
| B. | NASS Cheddar Cheese Price Survey |
| C. | NASS Swiss cheese Price Survey |
| D. | U.S. Cheddar Cheese Price Survey |
| Answer» C. NASS Swiss cheese Price Survey | |
| 230. |
According to the Food & Nutrition Board of the National Academy of Sciences, all people need at least _________ milligrams of calcium per day. |
| A. | 100 |
| B. | 1000 |
| C. | 10,000 |
| D. | 100,000 |
| Answer» C. 10,000 | |
| 231. |
Dairy_farmers_can_buy_and_sell_dairy_futures_on_what_exchange? |
| A. | New York Stock Exchange |
| B. | National Dairy Exchange |
| C. | Coffee, Sugar, Coca Exchange |
| D. | Chicago Mercantile Exchange |
| Answer» E. | |
| 232. |
Which of the following is not a cause of coliform mastitis? |
| A. | Cracked or split inflations |
| B. | Milking too soon after calving |
| C. | Using excessive water in washing udders |
| D. | Slightly damp, warm bedding |
| Answer» C. Using excessive water in washing udders | |
| 233. |
Milk provides__________ and _____________ in approximately the same ratio as found in bone. |
| A. | Calcium and Magnesium |
| B. | Calcium and Phosphorus |
| C. | Calcium and Iron |
| D. | Phosphorus and Magnesium |
| Answer» C. Calcium and Iron | |
| 234. |
The __________ test is used to detect if milk has been pasteurized properly. |
| A. | Lipase |
| B. | Coliform |
| C. | Standard Plate Count |
| D. | Phosphatase |
| Answer» E. | |
| 235. |
One type of test for antibiotics, common adulterants of milk, is based upon the principle that the growth of bacteria is __________ by them. |
| A. | Stimulated |
| B. | Enhanced |
| C. | Magnified |
| D. | Inhibited |
| Answer» E. | |
| 236. |
The Standard Plate Count (SPC) has a prescribed incubation time of _____ hours at _____ ºC$ |
| A. | 24 hours at 32ºC |
| B. | 48 hours at 45ºC |
| C. | 48 hours at 32ºC |
| D. | 12 hours at 45ºC |
| Answer» D. 12 hours at 45¬¨¬®‚Äö√†¬¥C | |
| 237. |
Which of the following will best control contagious mastitis? |
| A. | Pre-milking teat dip |
| B. | Barrier type teat dip |
| C. | Antibiotic teat dip |
| D. | Germicidal teat dip |
| Answer» D. Germicidal teat dip | |
| 238. |
The form of mastitis that is hidden from sight is known as __________________ |
| A. | Infectious |
| B. | Clinical |
| C. | Acute |
| D. | Sub-Clinical |
| Answer» E. | |
| 239. |
The milk fat differential used in paying for raw milk is? |
| A. | The price to be added or subtracted per 1/10 % of milk fat above or below a set percentage |
| B. | A value established to penalize milk producers who have too much fat in their milk |
| C. | A value set to penalize milk producers who have too little fat in their milk |
| D. | The price to be added or subtracted per 50 percent of milk fat above or below a set percentage |
| Answer» B. A value established to penalize milk producers who have too much fat in their milk | |