Process Equipment and Plant Design Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the Economic limit reached, when the plant cost exceeds the saving of steam Neither A nor B Both A & B Practical limit reached, due to low heat transfer rate because of inadequate temperature difference Economic limit reached, when the plant cost exceeds the saving of steam Neither A nor B Both A & B Practical limit reached, due to low heat transfer rate because of inadequate temperature difference ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from 3.5-5.5 7.5-10.0 44119 1.5-2.5 3.5-5.5 7.5-10.0 44119 1.5-2.5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Remains same throughout Decreases upwards Increases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Remains same throughout Decreases upwards Increases upwards ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation Increases economy Does not affect the capacity Increases capacity Both B & C Increases economy Does not affect the capacity Increases capacity Both B & C ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A stuffing box is used for Absorbing the contraction/expansion of pipeline due to temperature changes Facilitating smooth opening and closing of a valve Prevention of fluid leakage around moving parts Reducing the resistance of fluid flow Absorbing the contraction/expansion of pipeline due to temperature changes Facilitating smooth opening and closing of a valve Prevention of fluid leakage around moving parts Reducing the resistance of fluid flow ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm. 5 30 20 10 5 30 20 10 ANSWER DOWNLOAD EXAMIANS APP
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