Earth Orbit MCQ (Multiple Choice Questions) PDF - 62

MCQ 306: Geostationary satellites have lifetime of nearly

1. 20 years
2. 10 years
3. 50 years
4. 60 years

MCQ 307: Average power dissipated in resistor if sinusoidal p.d of peak value 25 V is connected across a 20 Ω resistor is

1. 15.6 W
2. 15 W
3. 16 W
4. 17 W

MCQ 308: Escape velocity for a particle is about

1. 5 kms^-1
2. 8 kms^-1
3. 11 kms^-1
4. 14 kms^-1

MCQ 309: Mean drift velocity of electron in a copper wire having cross-sectional area 5.0 × 10^-6 m² carrying current of 1 A and having number density 8.5 × 10²⁸ m³ is

1. 0.015 mms^-1
2. 0.1 mms^-1
3. 0.5 mms^-1
4. 0.25 mms^-1

MCQ 310: Changing magnetic field induces

1. charge
2. current
3. frequency
4. voltage