Engineering, 19.07.2019 21:20 graciearany
Atwo-stroke ci. engine delivers 5000 kwwhile using 1000 kw to overcome friction losses. it consumes 2300 kg of fuel per hour at an air-fuel ratio of 20 to 1. the heating value of fuel is 42000 kjkg find the (a) indicated power (b) mechanical efïiciency, (c) air consumption per hr, (d) indicated themal efficiency, and (e) brake thermal efficiency.
Answers: 2
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:10
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
Engineering, 04.07.2019 18:20
Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms
Answers: 2
Atwo-stroke ci. engine delivers 5000 kwwhile using 1000 kw to overcome friction losses. it consumes...
Physics, 07.04.2020 00:59
Computers and Technology, 07.04.2020 00:59
English, 07.04.2020 00:59
Mathematics, 07.04.2020 00:59
History, 07.04.2020 00:59
English, 07.04.2020 00:59
Mathematics, 07.04.2020 00:59
Social Studies, 07.04.2020 00:59