Electrical Circuits

151. The factor 0.707 for converting peak to rms applies only to

1. Square waves
2. Triangle waves
3. Sawtooth waves
4. Sine waves

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152. The farad is not equivalent to which of the following combination of units

1. CV²
2. C²/J
3. C/V
4. J/V²

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153. The graph between an alternating quantity and time is called

1. Sine wave
2. Curve
3. Waveform
4. A plot

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154. The hot resistance of an incandescent lamp is about __________ times its cold resistance.

1. 10
2. 5
3. 50
4. 100

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155. The impedance in the study of electronics is represented by resistance and

1. Inductance
2. Capacitance
3. Inductance and capacitance
4. Reactance

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156. The internal resistance of an ideal current source is

1. Infinite
2. Zero
3. Equal to the load resistance
4. To be determined

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157. The internal resistance of an ideal voltage source is

1. Infinite
2. Equal to the load resistance
3. Zero
4. To be determined

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158. The maximum power transfer theorem is used in

1. Power system
2. Electronic system
3. Refrigeration
4. Air conditioning

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159. The mutual inductance between two coils is the reluctance of magnetic path.

1. Directly proportional to
2. Inversely proportional to
3. Independent to
4. Equal to

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160. The ohmic value of a resistor with negative temperature coefficient

1. Increases with increasing temperature
2. Increase with decreasing temperature
3. Stays unchanged with temperature change
4. Stays unaffected even with increasing temperature

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