Delivery drone concept in Drone Programming - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Calculate remaining battery after delivery

A delivery drone starts with 100% battery. It uses 15% battery to fly to the destination and 10% to return. What is the remaining battery percentage after the round trip?

Drone Programming

battery = 100
used_to_destination = 15
used_to_return = 10
remaining_battery = battery - used_to_destination - used_to_return
print(remaining_battery)

A 65

B 75

C 85

D 90

💡 Hint

Subtract the battery used for both legs from the total battery.

The drone uses 15% + 10% = 25% battery. Starting from 100%, remaining is 100 - 25 = 75%.

🧠 Conceptual

intermediate

Identify the drone's delivery status

The drone has a variable 'package_delivered' that is True if the package is delivered, False otherwise. Which code snippet correctly prints 'Delivered' when the package is delivered and 'In transit' otherwise?

A

if package_delivered:
    print('Delivered')
else:
    print('In transit')

B

if package_delivered == False:
    print('Delivered')
else:
    print('In transit')

C

if package_delivered = True:
    print('Delivered')
else:
    print('In transit')

D

)'tisnart nI'(tnirp    
:esle
)'derevileD'(tnirp    
:dereviled_egakcap fi

💡 Hint

Check the condition and indentation carefully.

Option A uses correct syntax and indentation. Option A reverses the logic. Option A uses assignment (=) instead of comparison (==). Option A has wrong indentation causing syntax error.

🔧 Debug

advanced

Fix the drone's flight path calculation error

The drone's flight path distance is calculated by adding the distances to destination and back. The code below has a bug. What error does it raise?

Drone Programming

distance_to_destination = 12.5
distance_to_return = '12.5'
total_distance = distance_to_destination + distance_to_return
print(total_distance)

A SyntaxError: invalid syntax

B NameError: name 'distance_to_return' is not defined

C TypeError: unsupported operand type(s) for +: 'float' and 'str'

D ValueError: could not convert string to float

💡 Hint

Check the types of variables being added.

Adding a float and a string causes a TypeError because Python cannot add different types directly.

📝 Syntax

advanced

Identify the syntax error in drone command function

Which option contains a syntax error in defining a function to start the drone?

A

def start_drone():
    print('Drone started')  # correct

B

def start_drone():
    print('Drone started')

C

)'detrats enorD'(tnirp    
:)(enord_trats fed

D

def start_drone:
    print('Drone started')

💡 Hint

Check the function definition syntax.

Option D misses parentheses after function name, causing a syntax error.

🚀 Application

expert

Calculate total delivery time with variable speeds

A drone flies to a destination 20 km away at 40 km/h and returns at 30 km/h due to wind. What is the total flight time in hours?

A 1.1666666666666667

B 0.95

C 0.75

D 1.0

💡 Hint

Use time = distance / speed for each leg and add them.

Time to destination = 20/40 = 0.5 hours; time to return = 20/30 ≈ 0.6667 hours; total ≈ 1.1667 hours.