問題一覧
1
what is the wheel axle power of a four-wheel tractor whose engine power is equal to 150 HP.The mechanical efficiency is 85%
127.5 hp
2
If an electric motor rated at 220 volts and 4.8 amperes is converted to 110 volts ,then it's rated current will be
9.6 A
3
Energy conversion efficiency (percent of electric motor is
50-90
4
Calculate the maximum starting current for 1/2 ho,220 volt electric motor with an H motor code (6.3-7.1 KVA/ hp)
16 A
5
if the amount of heat used in removing moisture from the grains in a continuous flow dryer 3000 kJ/hr,what is the heat utilization efficiency if the burner uses 6000 kJ/GR of fuel?
50%
6
If you invest P50,000 today at 9% interest,how much time is required for the investment to be worth P125,000?
11 years
7
Determine the time in hours to plow a 3-ha field using a 15 cm animal drawn plow at a speed of 4 kph and efficiency of 75%
66 hours
8
Determine the no. of days(8hrs/day) to plow a 10-ha field using a 3 bottom moldboard plow drawn by a 4-wheel tractor at a speed of 5 koh and field efficiency of 76%>Width of cut of one bottom is 33 cm
3.3 days
9
The application rate of a certain chemical is recommended at 4kg/ha.The calibration test of a 16-Liter knapsack sprayer is as follow:Nozzle discharge=1.2 liters/min,swath=1.5m and walking speed=20m/min.Determine the amount of chemical to mix with water per loading time
160 gsm/load
10
Determine the size of the diesel engine to be used for 4 inches X 4 inches gentrifugal pump. Pump discharge is 200gpm. Total head is 24 ft. Pump efficiency is 55%. V-belt efficiency is 95%. And air-cooled diesel engine delivery rating is 70%.
3.3 hp
11
In a 200 ha corn project,the fields have to be tilled in 30 days .What is the width of the heavy offset disk harrow should be selected if the tractor to be used operates at 3.125 mph .Assume a 75% field efficiency and a 8 hour working day
2.22
12
3 ha field was plowed using a 15-cn wide animal-drawn plow at 4kph and field efficiency of 75.The draft required to pull the plow is 60 kg.Find the distance traveled to plow the field
200 km
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1
what is the wheel axle power of a four-wheel tractor whose engine power is equal to 150 HP.The mechanical efficiency is 85%
127.5 hp
2
If an electric motor rated at 220 volts and 4.8 amperes is converted to 110 volts ,then it's rated current will be
9.6 A
3
Energy conversion efficiency (percent of electric motor is
50-90
4
Calculate the maximum starting current for 1/2 ho,220 volt electric motor with an H motor code (6.3-7.1 KVA/ hp)
16 A
5
if the amount of heat used in removing moisture from the grains in a continuous flow dryer 3000 kJ/hr,what is the heat utilization efficiency if the burner uses 6000 kJ/GR of fuel?
50%
6
If you invest P50,000 today at 9% interest,how much time is required for the investment to be worth P125,000?
11 years
7
Determine the time in hours to plow a 3-ha field using a 15 cm animal drawn plow at a speed of 4 kph and efficiency of 75%
66 hours
8
Determine the no. of days(8hrs/day) to plow a 10-ha field using a 3 bottom moldboard plow drawn by a 4-wheel tractor at a speed of 5 koh and field efficiency of 76%>Width of cut of one bottom is 33 cm
3.3 days
9
The application rate of a certain chemical is recommended at 4kg/ha.The calibration test of a 16-Liter knapsack sprayer is as follow:Nozzle discharge=1.2 liters/min,swath=1.5m and walking speed=20m/min.Determine the amount of chemical to mix with water per loading time
160 gsm/load
10
Determine the size of the diesel engine to be used for 4 inches X 4 inches gentrifugal pump. Pump discharge is 200gpm. Total head is 24 ft. Pump efficiency is 55%. V-belt efficiency is 95%. And air-cooled diesel engine delivery rating is 70%.
3.3 hp
11
In a 200 ha corn project,the fields have to be tilled in 30 days .What is the width of the heavy offset disk harrow should be selected if the tractor to be used operates at 3.125 mph .Assume a 75% field efficiency and a 8 hour working day
2.22
12
3 ha field was plowed using a 15-cn wide animal-drawn plow at 4kph and field efficiency of 75.The draft required to pull the plow is 60 kg.Find the distance traveled to plow the field
200 km