LV
Electrical Engineering Quiz
Test your knowledge and skills in electrical engineering with our challenging quiz! This quiz consists of 10 carefully crafted questions covering various topics including circuit theory, passive components, and automobile safety regulations.
Whether you are a student, a professional or simply an enthusiast, this quiz is designed to enhance your understanding of:
- Capacitor discharge calculations
- Band-pass filter phase shifts
- Acceleration and deceleration in vehicles
- Electrical safety guidelines and standards
)Consider a 120uF capacitor C charged at 401V .To discharge the capacitor a resistor R is mounted in series such as that the following equivalent circuit holds.What is the maximum resistor valuesuch that the capacitor to Vc=0.05V within 5 seconds?
13.9kOhm
10.4kOhm
8.7kOhm
6.2kOhm
For a certain application the following passive band-pass filter is used. Given the following values: R1=2.4kOhm,R2 = 10kkOhm,C1 = 500nF,C2 = 330nF.Which will be the phase shift at 120Hz?
20.2
180
90
-90
-20.2
You participate in Acceleration event.On your second run you set your best time at 4.80 secs.After passing the line the car comes to a complete stop after 32 meters.Assume acceleration and deceleration are both linear.What is the average velocity between the start and the complete stop on this run?
22.292m/s
6.6666m/s
15.625m/s
31.248m/s
Which are not true?
The “ON” position of the switch must be in the vertical position and must be marked accordingly. The “OFF” position of the master switch must also be clearly marked.
Master switches must be rigidly mounted to the vehicle and must not be removed during maintenance.
Master switches must be mounted next to each other.
The LVMS must be mounted in the middle of a completely red circular area of _50mm diameter placed on a high contrast background.
Mark the correct answers
BSPD must be directly supplied by the LVMS
If any APPS plausibility occurs the shutdown circuit should be opened
The TS voltage sense connection of the data logger must be directly connected, to the most negative AIR(s) on vehicle side
6mm shrouded banana jacks of rated for 1000V CAT III or better must be used.
Which of the following conditions are not true when the TS is active
An AIR is closed
The precharge relay is closed
The precharge relay is open
The maintenance plugs are not connected.
Which are true?
The sound level must be a minimum of 70 dBA and a maximum of 80 dBA, fast weighting. The sound level will be measured with a free-field microphone placed free from obstructions in a radius of 2m around the vehicle.
The vehicle must make a characteristic sound, continuously for at least one second and a maximum of four seconds when it enters ready-to-drive mode.
Tabs of pouch cells must not carry mechanical loads.
The AIRs and the main fuse must be separated with an electrically insulated and fire retardant material.
What is true ?
The commanded motor torque must be 0Nm if hard braking, and the APPS, signals pedal travel equivalent to 25% desired motor torque or 5kW, whichever is lower, at the same time up to 500 ms.
The commanded motor torque must remain at 0Nm until the APPS signals less than 5% pedal travel and 0Nm desired motor torque, regardless of whether the brakes are still actuated or not.
The rotating part of the wheels need to be grounded.
The overcurrent protection must be designed for the expected surrounding temperature range but at least for 0C to 90C
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