What is the momentum of a man of mass 75 kg when he walks with a uniform velocity of 2 m/s?

- 50 kg m/s
- 75 kg m/s
- 100 kg m/s
- 150 kg/s

At the center of the earth, the value of g becomes-

- Infinity
- Unity
- Zero
- None of these

Two unequal masses possess the same momentum, then the kinetic energy of the heavier mass is ………………..the kinetic energy of the lighter mass.

- smaller than
- greater than
- same as
- none of these

15 Bulbs of 60 W each, run for 6 hours daily and a fridge of 300 W runs for 5 hours daily. Find the forthright bill at the rate of 30 paise per unit?

- Rs. 31.05
- Rs. 45.55
- Rs. 62.10
- Rs. 75.10

Sheaths are used in cables to-

- Provide proper insulation
- Provide mechanical strength
- Prevent ingress of moisture
- None of these

For the stable operation of the interconnected system, the passive element that can be used as the interconnecting element is-

- Reactor
- Resistor
- Capacitor
- Resistor and Capacitor

The insulation resistance of a cable of length 10 km is 1 MΩ, its resistance for 50 km length will be-

- 1 MΩ
- 5 MΩ
- 0.2 MΩ
- 10 MΩ

The rate of change of momentum is directly proportional to-

- Force
- Inertia
- Moment
- None of these

If four 80 μF capacitors are connected in parallel, the net capacitance is-

- 20 μF
- 80 μF
- 160 μF
- 320 μF

The transformer used to decrease the magnitude of the alternating voltage is a-

- step-up transformer
- step-down transformer
- step-in transformer
- step-out transformer