Quiz's for General Studies(GK) for Civil Service Exams 17 12

## June 20, 2013

### APCPDCL-SUBENGINEERS 2010 Previous Paper

APCPDCL-SUBENGINEERS 2010 KEY PAPER
1.       Value of  εo=-------------------
2.       Relation b/w E,Q and V------------
3.       In a RC series circuit the  initial current is --------------
4.       In a RC series circuit At resonance the p.f. -------------
5.       The complex form of Magnitude 100 and Phase shift 300  -------------------------
6.       v=100sin1256t find f=--------------
7.       If temperature increases dielectric constant----------
8.        High thermal conductivity is for---------
a)solid ice  b)melting ice  c)steam  d) water

9.       Peak to peak voltage is 100v then the rms voltage is-------
10.    The effective value of a triangular wave------
11.   Magnetic flux density can be expressed in-------------
12.    Resonance frequency----------
13.    Mutual coupling M=--------------
14.   If load increases speed of DC motor--------------------
15.   In a DC shunt motor Rsh=200ohm, I=20A, v=250V, find Ia=-------
16. In a DC generator Eg1=200v, N1=1000 rpm find the induced emf at
1200 rpm-------
17. For a dc machine before the saturation the relation b/w torque and Ia--------
18. The DC motor has constant loss=100w, fl cu loss400w, max efficiency occurs at in
19. Commutator function in dc gen------------
20. Max power of a motor when Eb=-----------
21. Back slip for IM---------------
22. S1=0.03, r2=0.25 for fl torque, an external resistance of 0.75 added, find out the new
slip corresponding to the fl torque--------
23. Transformer works on the principle of ---------
24.R1=0.1ohm, and K=5, Find the resistance referred to secondary---
25. As the airgap increases in an alteranor increase the--------------
26. For centrifugal pumps which type of motor used--------
27.1000kw, 0.8 lag means------------(The motor can withstand upto 1000kw
at 0.pf lag and rated voltage)
28.The max power developed in an alternator at angle of-----------
29. For a 4 pole, 3 Φ IM, the poles , frequency and load reduced to half then the new
Speed----------
30. High efficiency in which power plant---------
31. water hammering effect can be avoided by using----------
32. In nuclear power plant control rods are made up of----------
33. which shape of conductors are used to reduced corona--------
34.Lead sheaths are used in order to protect the cable from---------
35.pin type insulators are used upto----------------
36. The purpose of breather in Transformer---------
37.The purpose of transformer oil--------
38. The lighting arresters are installed nearer to---------
39.Horn gap fuses are used for protecting---------------
40. Mho relays are used for -------------
41.communication interference with ---------- type of system
42.Merz-price protection for generator is provided for----
43.conncetion for polemounted transformer--------
44. Series capacitors are used in transmission line------
45.surge impedance of a transmission line-------
46. Rupturing capacity of CB expressed in----
47. In power factor correction capacity of a capacitor expressed in -------
48. Fusing factor-------
49. For welding which type of motor used--------
50.In home applications fans, tubes circuits are connected in -------------------
51.Units for Luminous flux----------
52. 1Phot=-------
53.stroboscopic effect in---------
a)incandescent  b)fluorescent   c)sodium vapour lmap
54.Non- ferrous metals can be heated--------
a)dielectric b)inuction c)direct resistance
55.For welding Al material which type of welding used-----
a)DC arc b)gas        v)AC arc
56.Kando system--------
57. The shape of main line traction---------
58. For train lighting which type of battery used-------
59.Capacitor function in MV lamp------------
60. As –ve feed back of an amplifier increases --------
61.Adding of two binary numbers is called-----------
62. which region has most heavily doped------
63.Barrier potential of a p-n junction is caused by-----
64.current gain for CE--------
a)high   b)medium   c)low
65.Traic can’t be used in----------
66.Latching current of an SCR ------------
67.FET can be used as----------
68. An oscillator is--------------
69. Lissajous pattern obtained on a CRO can be used to determine--------
70. 8051 has ----------no.of interrupts including reset
71.HSC in PLC------
72.Code for double division in PLC-------
73.For high inductive loads the input and output current waveforms---
74. For midpoint cycloconverter the o/p voltage interms of frequency--------
75. Modbus purpose in PLC-----------
a)serial communication b) parallel communication c)serial – parallel
76. In MC system the scale is ----------
77. For measuring 40v, 75hz which type of meter used-------
78. The overall efficiency in thermal plant----------
79.Economiser is used to -------
80. Circuit breaker-----------
81. Ferranti effect occurs at---------
82. If temperature increases dielectric constant----------
83.Fly wheel is used for------------
84. Most versatile memory in 8051------------
85. The equal resistance b/w a and b--------
86. Thermal runaway is due to-----------------
87. Thevenins voltage------------

88. Lamps and fans are controlled by switch with---------- wire
89. For busbar----------------- protection is used
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