Practice Test: Question Set - 05
1. Which of the following materials has a negative temperature coefficient of resistance?
- (A) Copper
- (B) Aluminum
- (C) Carbon
- (D) Brass
2. A resistance having rating 10 ohms, 10 W is likely to be a
- (A) Metallic resistor
- (B) Carbon resistor
- (C) Wire wound resistor
- (D) Variable resistor
3. What is the answer to this question?The resistance of a few meters of wire conductor in closed electrical circuit is
- (A) Practically zero
- (B) Low
- (C) High
- (D) Very high
4. A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will:
- (A) Decrease
- (B) Increase
- (C) Remain same
- (D) Heater will burn out
5. A glass rod when rubbed with silk cloth is charged because
- (A) It takes in proton
- (B) Its atoms are removed
- (C) It gives away electrons
- (D) It gives away positive charge
6. Bulbs in street lighting are all connected in
- (A) Parallel
- (B) Series
- (C) Series-parallel
- (D) End-to-end
7. Which method can be used for absolute measurement of resistances?
- (A) Lorentz method
- (B) Raleigh method
- (C) Ohm's law method
- (D) Wheatstone bridge method
8. All good conductors have high
- (A) Conductance
- (B) Resistance
- (C) Reluctance
- (D) Thermal conductivity
9. When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is
- (A) 1 n-mho
- (B) 106 mho
- (C) 1 milli-mho
- (D) None of the above
10. One Newton meter is same as
- (A) One watt
- (B) One joule
- (C) Five joules
- (D) One joule second
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