To Verify Three Ammeter method

1. The pointer deflection of wattmeter is proportional to

a) Torque produced in the wattmeter
b) Voltage
c) Power
d) (a) or (b)

2. The one “unit” of energy measured in AC circuit is equivalent to

a) One watt-hour
b) One kilowatt-hour
c) One watt
d) One kilowatt

3. Which of the following energy meter is universally accepted to measure AC encrgy?

a) Motor meter
b) Induction type meter
c) Mercury motor meter
d) Reason Electrostatic meter

4. The torque produced in a wattmeter is proportional to

a) The average value of current in the two coils
b) The r.m.s. value of currents in the two coils
c) The average value of the supply voltage
d) None of the above

5. Which would be large as regards the space occupied?

a) 1 ohm. 54 watt resistor
b) 500 ohms, 5 watt resistor