Delhi Police HC AWO/TPO flashcards
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31 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Delhi Legislative Assembly seats
- The Delhi Legislative Assembly has 70 elected seats. Delhi is a Union Territory with a legislature under Article 239AA, and the Lieutenant Governor is its constitutional head.
- Article 239AA
- Article 239AA grants Delhi a Legislative Assembly and Council of Ministers with powers over state and concurrent list subjects, excluding police, public order and land.
- Successive percentage change
- For changes of a% and b%, the net change is a + b + ab/100. A 20% rise then a 20% fall gives a net 4% decrease.
- Average speed equal distances
- When equal distances are covered at speeds x and y, average speed is the harmonic mean 2xy/(x + y), not the arithmetic mean (x + y)/2.
- CI minus SI for two years
- For two years, compound interest exceeds simple interest by P(R/100)², where P is the principal and R the annual rate percent.
- Alligation rule
- The ratio in which two ingredients of prices c and d must be mixed to give mean price m is (m − c) : (d − m), with d greater than m.
- Syllogism conversion rules
- 'All A are B' converts to 'Some B are A'. 'No A is B' converts to 'No B is A'. 'Some A are B' converts to 'Some B are A'.
- Circular seating facing centre
- When people face the centre of a circular table, a person's left is clockwise and right is anticlockwise. Facing outside reverses these directions.
- Opposite letter pairs
- In the English alphabet, opposite pairs are A-Z, B-Y, C-X, D-W, E-V, F-U, G-T, H-S, I-R, J-Q, K-P, L-O and M-N.
- Subject-verb agreement with one of
- 'One of the + plural noun' takes a singular verb, as in 'One of the boys is absent'. 'Each', 'every', 'either' and 'neither' are also singular.
- Comprise versus consist of
- 'Comprise' takes a direct object with no 'of', while 'consist' requires 'of'. 'Discuss' and 'reach' also take no preposition.
- Affect versus effect
- 'Affect' is usually a verb meaning to influence. 'Effect' is usually a noun meaning a result, though it can be a verb meaning to bring about.
- दीर्घ संधि
- जब दो स्वर मिलकर दीर्घ स्वर बनें तो दीर्घ संधि होती है, जैसे विद्या + आलय = विद्यालय तथा हिम + आलय = हिमालय।
- बहुव्रीहि समास
- जिस समास में दोनों पदों में से कोई भी मुख्य न होकर कोई तीसरा अर्थ प्रधान हो, उसे बहुव्रीहि समास कहते हैं, जैसे दशानन।
- मुहावरा: नौ दो ग्यारह होना
- इस मुहावरे का अर्थ है भाग जाना या चुपचाप खिसक जाना। इसका प्रयोग वाक्य में क्रिया के रूप में होता है।
- VHF frequency range
- VHF spans 30 to 300 MHz and is used for line-of-sight police mobile and handheld communication. Its range depends on antenna height, not on skywave reflection.
- Half-wave dipole length
- The length of a half-wave dipole in metres is approximately 143 divided by the frequency in MHz. A quarter-wave vertical is about 71.5 divided by frequency.
- Baudot code
- The Baudot code is a 5-bit teleprinter code giving 32 combinations, with FIGS and LTRS shift characters sharing codes between letters and figures.
- Teleprinter answer-back
- The answer-back drum automatically transmits the station's identification when interrogated with the WRU signal, confirming the correct receiving station.
- VSWR meaning
- Voltage standing wave ratio measures mismatch between transmitter and antenna. A value near 1:1 is ideal, while above 2:1 indicates reflection that can damage the transmitter.
- FM versus AM noise
- Frequency modulation is more resistant to noise because most interference affects amplitude, which an FM receiver can limit and discard.
- MAYDAY versus PAN-PAN
- MAYDAY signals grave and imminent danger and requests immediate assistance. PAN-PAN signals urgency about a situation that is not immediately dangerous.
- Roger and Wilco
- Roger means the message was received correctly. Wilco means the message was received and will be complied with. Out ends the exchange.
- Zero FIR
- A Zero FIR records a cognizable offence at any police station regardless of jurisdiction. It is later transferred to the station having proper jurisdiction.
- Article 22 protections
- Article 22 requires that an arrested person be informed of the grounds of arrest, allowed a lawyer, and produced before a magistrate within 24 hours.
- Bharatiya Nyaya Sanhita
- The Bharatiya Nyaya Sanhita replaced the Indian Penal Code, and the Bharatiya Nagarik Suraksha Sanhita replaced the CrPC, effective 1 July 2024.
- Universal logic gates
- NAND and NOR are called universal gates because any other logic gate or Boolean function can be built using only NAND gates or only NOR gates.
- Painted cube formula
- A cube cut into n³ small cubes has 8 corner cubes with three painted faces, 12(n − 2) edge cubes with two, and 6(n − 2)² face cubes with one.
- Mirror versus water image
- A mirror image swaps left and right while keeping top and bottom unchanged. A water image swaps top and bottom while keeping left and right unchanged.
- Ohm's law and power
- Ohm's law states V = IR. Power equals VI, I²R or V²/R. In series, current is common; in parallel, voltage is common.
- Battery series and parallel
- Connecting cells in series adds their voltages while keeping capacity the same. Connecting them in parallel adds capacity in ampere-hours while keeping voltage the same.