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Cummins Aptitude, Technical Questions with Answers
Posted on :11-04-2016
Q1. To increase the input resistance and decrease the output resistance in negative feedback, the type used is
A. Voltage ShuntB. Current SeriesC. Voltage SeriesD. Current Shunt
Q2. Clipper circuits are used to obtain any one of the following waveforms
A. SharperB. RectifiedC. Fast RisingD. Smaller Amplitude
Q3. The most economical way of going from City A to City B, in terms of toll and distance is to use the
A. bridgeB. tunnelC. toll free highwayD. bridge and highway
Q4. What frequency range is the High Frequency band?
A. 100 kHzB. 1 GHzC. 30 to 300 MHzD. 3 to 30 MHz
Q5. An SCR is a device having
A. Three layers with four junctionsB. Three layers with two junctionsC. Four layers with three junctionsD. Two layers with three junctions
Q6. The VSWR of a transmission line is 4, its reflection coefficient is
A. 0.4B. 0.6C. 2D. 4
Q7. The amplifier is which current is proportional to the signal voltage, independent of source load resistance is called
A. Current AmplifierB. Voltage AmplifierC. Transresistance amplifierD. Transconductance amplifier
Q8. In an RL circuit after a very long time of application of step voltage the inductance L is represented in its equivalent circuit as
A. Open CircuitB. Short CircuitC. L / 2D. 2L
Q9. By passing a triangular wave through a differentiating circuit the output wave shape is
A. SpikesB. Square waveC. SawtoothD. Sine wave
Q10. A network with impedance function 10(s + 1) / s(s + 2) could be realised using
A. Resistors onlyB. Inductors and Capacitors onlyC. Resistors and Capacitors onlyD. Resistors, Inductors and Capacitors
Q11. The value of a resistor creating thermal noise is doubled. The noise power generator is therefore.
A. HalvedB. QuadrupledC. DoubledD. Unchanged
Q12. In FET amplifiers, input is
A. A current signalB. A voltage signalC. Either a current or voltage signalD. None of these
Q13. In Bipolar Junction transistors, the type of configuration which will give both voltage gain and current gain is
A. CCB. CBC. CED. None
Q14. If the bandwidth of each R F amplifier is 80 KHz the bandwidth of three such stages cascaded is
A. 800 KHzB. 2400 KHzC. 400 KHzD. 200 KHz
Q15. The reflection coefficient on a lossless line with a short circuit load, is given by
A. -1B. 0C. 1D. Lamda
Q16. For different loads the range of the values for VSWR is
A. 0 to 0.5B. 0.5 to 1C. 0 to 1D. 1 to Infinity
Q17. Five years ago the average age of a family of 3 members was 27 years. A child has Been born, due to which the average age of the family is 25 years today. What is the Present age of the child?
A. 4B. 5C. 6D. 8
Explanation:Average age of 3 members in family = 3* 27 After 5 years average of 3 members = 3* 27 +15 Average age of 4 members in family = 4 *25 Present age of child = 4 * 25 - ( 3 * 27 +15) =4
Q18. A SACKBUT is to a TROMBONE as a _______ is to a _______.
A. CHALUMEAU: CLARINETB. HELICON: TUBAC. CORNET: TRUMPETD. BASSOON: OBOE
Explanation:Much as a sackbut was an early form of the trombone, used during Renaissance times, the chalumeau was a precursor to the clarinet. A cornet is a currently employed instrument that is very similar to the trumpet, and a helicon is a type of tuba which encircles the instrumentalists head. Bassoons and oboes are both double-reeded woodwind instruments of the same family.
Q19. A cylindrical container has a radius of eight inches with a height of three inches. Compute how many inches should be added to either the radius or height to give the same increase in volume?
A. 5B. 5.33C. 5.8D. none of these
Explanation:Let x be the amount of increase. The volume will increase by the same amount if the radius increased or the height is increased. So, the effect on increasing height is equal to the effect on increasing the radius. i.e., (22/7)*8*8*(3+x) = (22/7)*(8+x)*(8+x)*3 Solving the quadratic equation we get the x = 0 or 16/3. The possible increase would be by 16/3 inches.
Q20. Read the following information given below and answer the questions that follow:
For a motorist there are three ways going from City A to City C. By way of bridge the distance is 20 miles and toll is $0.75. A tunnel between the two cities is a distance of 10 miles and toll is $1.00 for the vehicle and driver and $0.10 for each passenger. A two-lane highway without toll goes east for 30 miles to city B and then 20 miles in a northwest direction to City C.
Which is the shortest route from B to C?
A. Directly on toll free highway to City CB. The bridgeC. The TunnelD. The bridge or the tunnel
Q21. Never before _____ as rapidly, as during the last three decades.
A. communications have developedB. have communications developedC. have developed communicationsD. none of these
Q22. Which of the following is the Antonym of Predilection?
A. AttractionB. DislikeC. ChoiceD. none of the above
Q23. Some M are not P, All M are S, Therefore, some S are not P,
This syllogism is:
A. Valid.B. Invalid, the middle term is not distributed in at least one premise.C. Invalid, a term is distributed in the conclusion, but is not distributed in the premise in which it occurs
D. Invalid, the premises are both negative.
Q24. Jim usually drives alone from City C to City A every working day. His firm deducts a percentage of employee pay for lateness. Which factor would most influence his choice of the bridge or the tunnel?
A. Whether his wife goes with himB. scenic beauty on the routeC. Traffic conditions on the road, bridge and tunnelD. saving $0.25 in tolls
Q25. A MNEMONIC is to MEMORIZATION as a _______ is to _______.
A. ANESTHETIC: FEELINGB. NEPHROLITH: DIGESTIONC. DIURETIC: URINATIOND. SCOTOMA: VISUALIZATION
Explanation:A mnemonic is a pattern or other device that aids in memory, just as a diuretic is a substance that aids in urination. A nephrolith is a kidney stone, and has nothing to do with digestion. If anything, a scotoma, which is a blind spot or partial loss of vision, deprives a person of proper visualization, and of course an anesthetic is a substance used to remove feeling in a patient.
Q26. The Eiffel Tower is ________ the Leaning Tower of Pisa.
A. as popular a tourist attraction thanB. as popular a tourist attraction asC. as more popular a tourist attraction asD. none of these
Q27. It is not yet clearly understood _________ cause obesity.
A. why eating too many hamburgers canB. why can eating too many hamburgersC. eating too many hamburgers canD. none of these
Q28. Fill in the blank with the appropriate word. _______ the Depression, individual stock ownership was common in the United States.
A. It was duringB. By the time ofC. BecauseD. none of these
Q29. Which of the following is the Antonym of Admonish?
A. BlessB. PraiseC. CongratulateD. None of the above
Q30. For each of the following syllogisms, decide whether it is valid. If not, determine which rule it violates.
All M is P
No S are M
Therefore, No S is P
This syllogism is:
A. Invalid, the middle term is not distributed in at least one premise.B. Invalid, a term is distributed in the conclusion, but is not distributed in the premise in which it occurs.C. Invalid, the premises are both negative.D. Invalid, one premise is negative, but the conclusion is not negative, or the conclusion is negative, but one premise is not negative.