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Recently added practice questions

12281. A channel is said lo be of most economical cross section, for a given cross-sectional area and bed slope when it __________________?
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A. All of these

B. Involves lesser excavation

C. Has minimum wetted perimeter

D. Gives max. Discharge

12282. A change in the relative prices of which of the following pair of goods would likely cause the smallest substitution effect ?
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A. petrol from BP and petrol from shell

B. coke and Pepsi

C. kit-Kat chocolate snacks and Twix chocolate snacks

D. right shoes and left shoes
12283. A change in occupational position or role without involving any change in its position in the social hierarchy is called____________?
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A. Vertical mobility

B. None of these

C. social mobility

D. Horizontal mobility
12284. A chance variation in an observational process is_____________?
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A. Instrument error

B. Random error

C. Measurement error

D. Dispersion/ Variability

12285. A certain Wheatstone bridge has the following resistor values: R1 = 10 k?, R2 = 720 ?, and R4 = 2.4 k?. The unknown resistance is_____________?
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A. 2.4 ?

B. 300 ?

C. 3,000 ?

D. 24 ?

12286. A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the carpet loss. The carpet loss may be of the order of ______________ cms?
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A. 5 to 15

B. 1 to 2

C. 20 to 40

D. 3 to 4

12287. A certain JFET data sheet gives VGS(off) = -4 V. The pinch-off voltage Vp is _____________?
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A. -4 V

B. dependent on VGS

C. data insufficient

D. +4 V
12288. A certain circuit is composed of two parallel resistors. The total resistance is 1,403 ?. One of the resistors is 2 k?. The other resistor value is____________?
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A. 4.7 k?

B. 2 k?

C. 1,403 ?

D. 3,403 ?

12289. A cement concrete road is 1000 m long, 8 m wide and 15 cm thick over the sub-base of 10 cm thick gravel. The box cutting in road crust is__________________?
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A. 500 m3

B. 2000 m3

C. 1500 m3

D. 1000 m 3

12290. A catalyst promoter_________________?
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A. Acts as a catalyst support

B. Itself has very high activity

C. Improves the activity of a catalyst

D. All A., B. and C.

12291. A catalyst can not effect__________________?
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A. Products

B. Chemical equilibrium

C. Reactants

D. both A & B
12292. A case study is most useful when ____________?
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A. facts must be established

B. limited research funds are available

C. no hypothesis can be formulated

D. events under consideration are rare

12293. A carrier based PWM technique in CSI is composed of____________?
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A. A switching and shorting pulse combination

B. A shorting pulse distributor

C. All of these

D. A switching pulse generator and a shorting pulse generator

12294. A card of which colour dismisses a player from the match?
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A. Red

B. Blue

C. Yellow

D. Green

12295. A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is___________?
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A. Jan-52

B. 13-Feb

C. 1/26

D. 13-Jan

12296. A car is running at a speed of 108 kmph. What distance will it cover in 15 seconds ?
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A. 55 metres

B. 450 metres

C. Cannot be determined

D. 45 metres

12297. A capitalist adds to his wealth because:
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A. Machines installed by him produce more

B. There is difference between exchange value of what is produced and what is paid

C. Capitalist can win the cooperation of the workers

D. The workers wish so

12298. A capitalist adds to his wealth because:
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A. There is difference between exchange value of what is produced and what is paid

B. Capitalist can win the cooperation of the workers

C. The workers wish so

D. Machines installed by him produce more

12299. A capital account surplus might be expected to cause a current account deficit because the associated ?
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A. capital inflow would cause the nations currency to appreciate contributing to a trade deficit

B. capital outflow would cause the nations currency to appreciate contributing to a trade deficit

C. capital outflow would cause the nations currency to depreciate contributing to a trade deficit

D. capital inflow would cause the nations currency to depreciate contributing to a trade deficit

12300. A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will______________?
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A. start and then stop

B. start and run at rated speed

C. start and run slowly

D. not start at all

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