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Recently added practice questions

8501. In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the _____________ crushing?
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A. Primary

B. Secondary

C. Ultrafine

D. Fine

8502. In a singly reinforced beam, the effective depth is measured from its compression edge to_________________?
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A. Neutral axis of the beam

B. Tensile edge

C. Tensile reinforcement

D. Longitudinal central axis

8503. In a single tank system, the transfer function of _____________ to inlet flow rate is 1/(TS+1)?
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A. Outlet flow rate

B. Level

C. Both A. & B.

D. Neither A. nor B.

8504. In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raffinate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) ?
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A. 6.89

B. 8.89

C. 8.25

D. 10

8505. In a single evaporator system, the steam economy ________________ by creating vacuum in the evaporator?
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A. Decreases

B. May increase or decrease, depends on the vacuum

C. Increases

D. Remain constant

8506. In a sine wave the slope is constant_______?
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A. between 180 and 270

B. between 90 and 180

C. between 0 and 90

D. no where
8507. In a sine wave the slope is constant_______?
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A. between 90 and 180

B. between 0 and 90

C. no where

D. between 180 and 270

8508. In a silicon controlled rectifier, the load is connected___________?
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A. In series with cathode

B. In series with anode

C. Across cathode

D. Across anode

8509. In a silicon controlled rectifier, the load is connected___________?
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A. Across cathode

B. In series with anode

C. In series with cathode

D. Across anode

8510. In a shunting signal if the red band is inclined at 45 it indicates_________________?
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A. none of the above

B. stop

C. proceed cautiously

D. proceed
8511. In a shell and tube surface condenser____________?
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A. cooling water passes through the tubes and steam surrounds them

B. all of the above varying with situation

C. steam and cooling water mix to give the condensate

D. steam passes through the cooling tubes and cooling water surrounds them

8512. In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
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A. Called tube pitch

B. Always less than the diameter of the tube

C. Called tube clearance

D. None of these

8513. In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
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A. Always less than the diameter of the tube

B. Called tube clearance

C. None of these

D. Called tube pitch
8514. In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the ____________ variable?
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A. None of these

B. Controlled

C. Load

D. Manipulated

8515. In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the ______________ variable?
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A. Manipulated

B. None of these

C. Controlled

D. Load

8516. In a shaded pole motor, the shading coil usually consist of___________?
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A. a single turn of heavy copper wire which is short-circuited and carries only induced current

B. a multilayer fine gauge copper wire in parallel with running winding

C. none of the above

D. a single turn of heavy wire which is in parallel with running winding

8517. In a series resonant band-pass filter, a lower value of Q results in______________?
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A. a higher resonant frequency

B. a higher impedance

C. a smaller bandwidth

D. a larger bandwidth
8518. In a series circuit with unequal resistances______________?
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A. the lowest resistance has the highest voltage drop

B. the highest resistance has the highest voltage drop

C. the highest resistance has the most of the current through it

D. the lowest resistance has the highest current

8519. In a semiconductor, current conduction is due to________________?
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A. Only free electrons

B. Holes and free electrons

C. None of the above

D. Only holes

8520. In a school of 850 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
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A. 153

B. 163

C. 173

D. 143

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