Question
Which type of antennae has the appearance of comb-like
structure and longer on one side?Solution
The segments of pectinate antennae are longer on one side, giving each antennae a comb-like shape. Bipectinate antennae look like two-sided combs. The term pectinate derives from the Latin pectin, meaning comb. Pectinate antennae are found in some beetles and sawflies.
Pipe ‘A’ can fill a tank in 30 hours whereas leak ‘A’ can empty it in 50 hours. If they both operate along with pipe ‘B’, then the given tan...
Pipes A and B can fill the tank in 16 and 20 hours respectively. Pipe C empties it in ‘x’ hours. If all are opened together, the tank gets filled in...
Pipe ‘X’ alone can fill a tank in 20 hours. When both pipes ‘X’ and ‘Y’ are opened together, they can fill 75% of the tank in 9 hours. How m...
Pipes A, B, and C can fill a tank in 30 minutes, 45 minutes, and 60 minutes respectively. All the pipes are opened together. A is closed after n minu...
In what time would a Cistern be filled by three pipes whose diameter are 2cm, 8/3cm and 4cm running together, where the largest pipe alone fill it in 18...
Pipes 'G' and 'H' can fill a tank in 24 hours and 8 hours respectively, while pipe 'I' can empty it in 48 hours. All pipes are opened together when the ...
Pipe 'A' alone takes 30 minutes to fill half of the tank. Pipe 'B' is twice as efficient as pipe 'A'. Find the percentage of the tank filled by both in...
Tap A and Tap B fill a drum of volume 189 liters in 7 minutes. If their efficiencies are in the ratio x:y respectively and B alone takes to fill the cis...
A, B and C are three pipes connected to a tank. A and B together fill the tank in 30 hours, B and C together fill the tank in 40 hours. A and C together...
Pipe A fills a tank in 12 min, pipe B in 18 min. Time to fill together?