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**151. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases:**
– **A. will be higher**
– B. will be lower
– C. will remain unaffected
– D. may be higher or lower depending upon the nature of non-condensable gases
– E. unpredictable
**152. The vapor compression refrigerator employs the following cycle:**
– A. Rankine
– B. Carnot
– **C. Reversed Rankine**
– D. Brayton
– E. Reversed Carnot
**162. The moisture in a refrigerant is removed by:**
– A. evaporator
– B. safety relief valve
– C. dehumidifier
– **D. driers**
– E. expansion valve
**153. In vapor compression cycle the condition of refrigerant is dry saturated vapor:**
– A. after passing through the condenser
– B. before passing through the condenser
– C. after passing through the expansion or throttle valve
– D. before entering the expansion valve
– **E. before entering the compressor**
**154. In vapour compression cycle, the condition of refrigerant is saturated liquid:**
– **A. after passing through the condenser**
– B. before passing through the condenser
– C. after passing through the expansion throttle valve
– D. before entering the expansion valve
– E. before entering the compressor
**155. An important characteristic of absorption system of refrigeration is:**
– A. noisy operation
– **B. quiet operation**
– C. cooling below 0°C
– D. very little power consumption
– E. its input only in the form of heating
**156. Vapor compression refrigeration is somewhat like:**
– A. Carnot cycle
– B. Rankine cycle
– C. reversed Carnot cycle
– **D. reversed Rankine cycle**
– E. none of the above
**157. Ammonia-absorption refrigeration cycle requires:**
– **A. very little work input**
– B. maximum work input
– C. nearly same work input as for vapour compression cycle
– D. zero work input
– E. none of the above
**158. One ton refrigeration corresponds to:**
– A. 50 kcal/min
– B. 50 kcal/kr
– **C. 80 kcal/min**
– D. 80 kcal/hr
– E. 1000 kcal/day
**159. A standard ice point temperature corresponds to the temperature of:**
– A. water at 0°C
– B. ice at – 4°C
– C. solid and dry ice
– **D. mixture of ice, water and vapour under equilibrium conditions under NTP conditions**
– E. mixture of ice and water Under equilibrium conditions
**160. In vapour compression cycle the condition of refrigerant is superheated vapour:**
– A. after passing through the condenser
– B. before passing through the condenser
– C. after passing through the expansion or throttle valve
– D. before entering the expansion valve
– **E. before entering the compressor**